FNS 121 Final Exam Flashcards

(382 cards)

1
Q

ANATOMY

A

examines the structures of the body.

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2
Q

PHYSIOLOGY

A

considers the function of the structures.

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3
Q

CELL THEORY:

A
  1. All living things are made up of cells.
  2. Cells are the basic unit of structure/function.
  3. All cells come from pre-existing cells.
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4
Q

What are the levels of organization ?

A

Cell, tissue , organ, organ system , organism

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5
Q

Cell

A

white blood cells (leukocyte), nerve cells, muscle cells, red blood cells (erythrocyte), neurons

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6
Q

Tissue

A
  1. epithelial-covering/lining, 2. connective-support, 3. muscular-movement, 4. nervous-control
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7
Q

ORGAN

A

skin, heart, kidney, lungs, gallbladder, spleen

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8
Q

ORGAN SYSTEM:

A

respiratory, digestive, endocrine, skeletal, circulatory

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9
Q

ORGANISM

A

human, wildebeest, bacteria, euglena, plants *NOT viruses

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10
Q

CHARACTERISTICS OF A LIVING THING:

A
  1. MOVE: willful change in body position; function of internal organs
  2. GROW: increase in body size w/o change in body shape
  3. REPRODUCE: produce new cells/organisms
  4. RESPONSIVENESS: react to external stimuli
  5. PERFORM CHEMICAL ACTIVITIES: digestion, excretion, respiration, absorption, circulation, assimilation
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11
Q

CLASSIFICATION SYSTEM:

A
  1. ANIMAL: human, wildebeest, horse, swan, dolphin
  2. PLANT: tree, daffodil, mistletoe, pumpkin, dandelion
  3. FUNGI: mushroom, yeast, mold, rusts, mildews
  4. MONERA: single-cell organisms like bacterium, spirillum, bacillus, strep
  5. PROTISTA: single-cell organisms like amoeba, euglena, protozoa, some algae/molds
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12
Q

MEMBRANES:

  1. VISCERAL [ORGAN]: covers a vital organ, ex. visceral pleura or visceral pericardium
  2. PARIETAL [WALL/CAVITY]: lines a cavity, ex. parietal pleura or parietal pericardium
  3. SEROUS FLUID: present in all cavities (name remains unchanged)
A

MEMBRANES:

  1. VISCERAL [ORGAN]: covers a vital organ, ex. visceral pleura or visceral pericardium
  2. PARIETAL [WALL/CAVITY]: lines a cavity, ex. parietal pleura or parietal pericardium
  3. SEROUS FLUID: present in all cavities (name remains unchanged)
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13
Q

MIDSAGITTAL

A

vertical plane that divides the body equally into right/left portions

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14
Q

CORONAL

A

frontal plane that divides the body into anterior/posterior portions

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15
Q

TRANSVERSE

A

horizontal plane that divides the body into superior and inferior portions

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16
Q

OBLIQUE

A

diagonal plane dividing the body at an angle

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17
Q

SAGITTAL

A

vertical plane that divides the body into lateral right/left portions (not equal or median)

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18
Q

What are the four quadrants ?

A

Right upper quadrant
Right lower quadrant
Left upper quadrant
Left lower quadrant

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19
Q

What’s are the nine regions

A

1 & 3 right/left hypochondriac, 2 epigastric, 4 & 6 right/left lumbar, 5 umbilical, 7 & 9 right/left iliac/inguinal, and 8 hypogastric; start with labeling anatomical right/left; region #5 is umbilical

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20
Q

SUPERIOR

A

above another part

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21
Q

INFERIOR

A

below another part

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22
Q

ANTERIOR

A

ventral) towards front

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23
Q

POSTERIOR

A

dorsal) towards back

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24
Q

MEDIAL

A

midline of the body; middle

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25
LATERAL
towards the side; away from mid-line/median
26
PROXIMAL
part closer to the point of attachment/trunk than another part (as a point of reference)
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DISTAL
part further from the point of attachment/trunk than another part (as a point of reference)
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SUPERFICIAL
near the surface
29
DEEP
more internal; away from the surface
30
The four quadrant body plan
Imaginary line created on the abdomen of the deceased | Helps to locate underlying viscera
31
Gross anatomy
the study of form and function of an organism which can be done without the aid of a microscope.
32
Histology
The study of tissues
33
Systemic
Throughout the entire system of the organism
34
Regional
Only specific to a localized area
35
Pathological
The study of diseased cells/tissues/etc
36
Topographical
Surface references to locate deeper lying structures.
37
Physiological
The study of function of an organism
38
Body plan
``` Vertebral column 7 cervical vertiebrae 12 thoracic vertebrae 5 lumbar vertebrae 5 sacral 1 coccyx ```
39
Body Cavities
``` Cranial cavity Spinal cavity Ventral cavity -thoracic cavity -abdominal cavity -abdmoninopelvic cavity -pelvic cavity ```
40
Cranial
Brain
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Spinal
Spinal cord
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Ventral
Thoracic | -lungs, mediastinum, thymus, heart, esophagus, trachea
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Abdominopelvic
Abdominal | -stomach, liver, spleen, gall bladder, small intestine, large intestine
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Pelvic
Urinary bladder , internal reproductive organs
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Body region
``` Head -Cranium -Face Neck (cervical) Trunk (torso) -thorax -Abdomen -Pelvis Upper extremities Lower extremities ```
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Body Regions
Axial Skeleton | Considered the ‘body proper” Head, neck, and abdominal area
47
Appendicular Skeleton
Consists of : upper extremities and lower extremities
48
Four basic tissues
Epithelial (covering/lining) Connective (support) Muscular (movement) Nervous (control)
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Visceral membrane
Covers a vital organ
50
Parietal membrane
Lines a body cavity
51
Serous fluid
Between membranes for lubrication
52
Visceral pleura
Surface of the lungs
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Parietal pleura
Lines the cavity of the lungs
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Pleural cavity
Filled with serous fluid
55
Visceral pericardium
Surface of the heart
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Parietal pericardium
Lines the cavity of the heart
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Pericardial cavity
Filled with serous fluid
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Visceral peritoneum
Surface of the liver, stomach, etc
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Parietal peritomeum
Lines the cavity of the abdomen
60
Peritoneal cavity
Filled with serous fluid
61
ORGANELLE
Tiny organ
62
NUCLEUS
The brain;” largest part of cell;
63
MITOCHONDRIA
Energy source
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RIBOSOMES
Make proteins
65
ENDOPLASMIC RETICULUM (SMOOTH
Provides transport-no proteins; L/S (look like roads off of nucleus)
66
ENDOPLASMIC RETICULUM (ROUGH)
Provides transport-WITH proteins; L/S (look like roads off of nucleus with ribosomes/dots on them)
67
LYSOSOMES
Help digest waste/worn cell parts
68
LYSOSOMES
enzymes speed reaction of excretion
69
NUCLEOLUS
Contains DNA (deoxyribonucleic acid) or RNA (ribonucleic) acid of cell; R/S-small circle inside the nucleus
70
CELL MEMBRANE:
Outer wall of cell
71
GOLGI APPARATUS (COMPLEX):
The packaging site of cell (performs similar function as colon does for human body); looks like a “stack of pancakes” above the nucleus
72
CYTOPLASM
Clear gel-like substance that all organelles are suspended in
73
VACUOLE
Storage site or ‘pantry’ of the cell;
74
NUCLEAR ENVELOPE/MEMBRANE:
The membrane around the cell nucleus that regulates what comes in/out;
75
CILIA
Short, hair-like projections used for movement
76
FLAGELLA
Long whip-like tails for movement; sing. = flagellum
77
PSUEDOPDODIA
False feet;” cells used cytoplasmic streaming to propel themselves (ex. amoeba)
78
GOLGI VESICLE
packets of unwanted waste/material that will travel to membrane to be released; L/S blank under vacuole; represented by small dots next to Golgi apparatus
79
PINOCYTOIC VESICLE
place in cell membrane that allows waste to pass out
80
CENTRIOLES
look like flowers; important in the cell cycle/mitosis
81
CELL MEMBRANE:
First line of defense; protects cell from the environment; maintains the integrity of the cell; “selectively permeable” in that it regulates what comes in/out of cell
82
NUCLEUS:
The brain;” controls all metabolic function of the cell
83
CYTOPLASM:
comprised of a clear gel-like substance (cytosol) that holds all of the organelles of the cell; keeps the cell vital and functioning
84
Animal cells
Round or ovoid in structure
85
Plant cells
Square or rectangular ; also have cell walls in addition to cell membranes
86
HYPOTONIC
A hypotonic solution has lower osmotic pressure meaning more water can enter the cell than can exit; the membrane of the cell can rupture and the cell die (ex. water balloon) *she called this plasmoptysis in class; book says they hemolyze
87
HYPERTONIC
: A hypertonic solution has higher osmotic pressure meaning that more water will exit the cell than can enter; the cell shrinks and can die (ex. grape to raisin) *she called this plasmolysis
88
ISOTONIC
The ideal solution for cells; equal passage of water in/out resulting in no change for the cells; an isotonic solution has the same osmotic pressure as body fluids
89
DIFFUSION
The movement of atoms/molecules/ions to move from area of higher concentration to area of lower concentration (ex. perfume)
90
OSMOSIS
The diffusion of water molecules across membranes; specific only to water
91
FILTRATION
The separation of solids from fluids (blood pressure forces filtration through capillaries)
92
MITOSIS
Cell division of somatic (normal body) cells; DOES NOT include sex or gamete cells; 4 main stages (prophase, metaphase, anaphase, telephase)
93
MEIOSIS
The means in which sex cells or gametes reproduce
94
The cell life cycle
Interphase, prophase, metaphase, anaphase, telephase, apoptosis
95
INTERPHASE
we added the drawing of a basic cell with nucleus; this is the state in which a cell spends most of its time growing and preparing for mitosis
96
PROPHASE
chromosomes are becoming visible; nuclear membrane disappears; centrioles appear/become visible; spindle fibers (long) and aster rays (short) appear
97
METAPHASE
centrioles move to opposite sides/poles of the cell; chromosomes move to the middle of the cell; spindle fibers attach to the chromosomes
98
ANAPHASE
chromosomes pulled apart and moved to opposite poles/sides of the cell by the spindle fibers; the cell elongates in preparation to divide (looks more ovoid)
99
TELEPHASE
cleavage furrow appears; spindle fibers disappear; cytoplasm disappears so cytokinesis (division of cytoplasm) can occur; nuclear membrane reappears as part of karyokinesis (division of nucleus); end up with two identical daughter cells that are identical to the original cell
100
APOPTOSIS
Cell death also called “programmed cell death” since it is part of the normal development of the cell
101
Cell/plasma membrane
Selectively permeable
102
Nucleus
Controls all of the metabolic activity of the cell
103
Cytoplasm
Contains all of the organelles
104
Ribosomes
Responsible for synthesizing ( making) proteins | Can be found free-floating writhing the cytoplasm or attached to the endoplasmic reticulum
105
Endoplasmic reticulum
Responsible for transporting proteins
106
Endoplasmic reticulum is called ____________ if it has ribosomes attached to it
Rough endoplasmic reticulum (RER)
107
The endoplasmic reticulum is called _______________ if there are no ribosomes attached to it
Smooth endoplasmic reticulum (SER)
108
Vesicles
Small sacs that transport material (particularly wastes material) throughout the cell Can be found around the Golgi apparatus and sometimes the Rough endoplasmic Reticulum
109
Golgi Apparatus/Complex is responsible
For packaging up material that needs to be expelled from the cell
110
Vesicles around the Golgi will take waste material from the
Golgi and fuse with the cell membrane in order to rid the waste from the cell
111
Mitochondria
Are responsible for providing the cell with energy
112
Energy stored from mitochondria is stored as
Adenosine triphosphate
113
Lysosomes are
digesting worn out cell parts using enzymes
114
Nucleons contains what information >
Genetic information of the cell | DNA or RNA
115
Nuclear envelope is responsible for
regulating what materials can enter/exit the nucleus
116
Diffusion
The movement of molecules from and area of higher concentration to an area of lower concentration.
117
Osmosis
The movement of water molecules from and area of higher concentration to an area of lower concentration
118
Hypertonic –
the amount of water exiting the cell is greater than the amount of water entering the cell.
119
Plasmolysis
Can occur , cell shrinks and dies
120
Isotonic
The amount of water entering the cell is equal to the amount of water exiting the cell .
121
Hypotonic
The amount of water entering the cell is greater than the amount of water exiting the cell .
122
Plasmoptysis
Can occur; cell swells, ruptures and dies.
123
Endocytosis
The process by which cells take in materials
124
Phagocytosis
The process in which cells take in solid matter
125
Pinocytosis
The process by which cells take in liquid matter
126
Exocytosis
The process by which cells expels material, whether it is a solid or a liquid.
127
Interphase
``` Nucleus clearly defined •Chromosomes not visible •Cell is preparing for mitosis •Mitosis – the cellular division of somatic cells •Consists of four stages ```
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Prophase
First stage of mitosis •Chromosomes become long and thin •Centrioles, aster rays, and spindle fibers appear during this stage •The nuclear envelope is initial intact, but eventually disappears •Toward the end of prophase, the chromosomes pair
129
Metaphase
Chromosomes line up in the middle of the cell •Spindle fibers attach to each side of the chromosomes •Centrioles and aster rays migrate to opposite poles of the cell
130
Anaphase
Chromosomes are pulled apart and migrate toward opposite poles of the cell •Cell shape begins to elongate as two cells begin to develop
131
Telophase
Two daughter cells develop that are identical to the original parent cell •Spindle fibers and aster rays disappear •The nuclear envelop reforms •Cytokinesis (division of the cytoplasm) occurs •Karyokinesis (division of the nucleus)occurs
132
HISTOLOGY
is the study of tissues; there are FOUR types of tissue: epithelial, connective, muscle, and nervous
133
EPITHELIAL TISSUE
covers the body
134
LAYERS
Layers start at the BASEMENT MEMBRANE (which has a basal layer-top and a reticular fiber layer-bottom) which is the point of attachment for cells.
135
Simple
Only one layer of cells; all cells touch the basement membrane (check nuclei)
136
Stratified
More than one layers of cells; not all cells touch the basement layer
137
Psuedostratified
Falsely” layered; all cells touch the basement membrane (check nuclei)
138
SHAPE
Squamous, cubiodal, columnar, transitional
139
Squamous:
Flat; look like “fried eggs” along basement membrane
140
Cuboidal:
Cube-shaped along basement membrane
141
Columnar:
Column or rectangular looking along basement membrane
142
Transitional
Change shape up layers; understood it’s stratified so label it “transitional E.T.”
143
CONNECTIVE TISSUE:
ADIPOSE (fat tissue) is most important to funeral student due to water content; we also discussed cartilage, bone, and blood.
144
ADIOPOCYTES
Fat cells; so full of water that water pushes or flattens nucleus of cell to the side; this water produces a “secondary dilution” of arterial fluid in embalming process and could require a higher strength or concentration (index number) of embalming solute/solution; remember her drawing on the board and discussion regarding embalming a 300lb body vs. a 98lb body
145
CARTILAGE
Listed from most flexible (least visible muscle fibers) to least flexible (most visible muscle fibers/dense matrix).
146
Hyaline
Very flexible; ex. ribs in thoracic cavity or tip of nose
147
Elastic
Medium flexibility; ex. external parts of ear (inner rim)
148
Fibrocartilage
Least flexible; ex. pubic symphysis or joints (book says it acts as a “shock absorber”)
149
Epiphysis
Ends of long bone (such as femur)
150
Diaphysis
Shaft of long bone (such as femur)
151
Spongy or cancellous bone
The end of long bone where red blood cells are made via hematopoesis
152
Compact bone:
Outer edge of long bones; contains Osteons ▪ The second diagram on page one of the handout deals with Osteons or compact bone, and she used an analogy to help remember parts: osteons look like tree ring/neighborhoodss and contain osteocytes (bone cells)/homes that are black dashes; lacunas/yards are the space around osteocytes/homes; osteocytes/homes are on lamellas (the space between concentric rings of osteons)/streets; canaliculi (cytoplasmic projections)/phone lines provide communication between osteocytes/homes; and the Haversian or central canal acts as the power source for the osteon/neighborhood.
153
Erythrocytes
Red blood cells; have NO nuclei and are bi-concave shaped; transport oxygen in the blood; most predominant cell seen in diagram
154
Leukocytes
White blood cells; fight infection in the body
155
Leukocytes
White blood cells; fight infection in the body ▪ Granulocytes: Can see the odd-shaped nuclei and granules inside cell (three types are eosinophil, basophil, and neutrophil) ▪ Agranulocytes: Generally very large with a large singular nucleus (two types are lymphocyte and monocyte)
156
Thrombocytes
Platelets; cytoplasmic fragments that help blood coagulate/clot
157
MUSCULE TISSUE
There are three types of muscle tissue in the body (skeletal, smooth, and cardiac). They can be identified by 4 characteristics: striation (lines in tissue), voluntary vs. involuntary movement, how many nuclei are present, and whether tissue branches or not.
158
SKELETAL MUSCLE
Attached to points on the skeleton, this is muscle that can be moved at will or voluntarily; it is striated; has multiple nuclei; and is unbranched
159
SMOOTH MUSCLE
Muscle that line the majority of our hollow internal organs; cannot be moved at will so is involuntary; no striations/non-striated; mono-nucleated; unbranched
160
CARDIAC MUSCLE
Muscle found only in the heart; involuntary; striated; mono-nucleated; branched; also has intercalated discs
161
Nervous Tissue
* NEURON: Nerve cell * Soma: Cell body of a neuron * Nucleus: Center of soma; takes and sends impulses * Axon: Takes impulses away from soma (A=axon, A=away); long tail coming off soma * Axon Hillock: Region where soma and axon meet * Dendrites: Delivers impulses to the soma (D=dendrite, D=deliver); all along body of soma * Neurolinglial Cells: Small dots surrounding soma that nourish the Central Nervous System (CNS)
162
What are four tissues ?
Epithelial, connective, muscular, nervous
163
Hyaline Cartilage
Most flexible
164
Elastic cartilage
Moderately flexible
165
Fibrocartilage
Least flexible
166
Skeletal muscle
``` Voluntary •Striated •Multinucleated •Unbranched •Attached to the skeleton ```
167
Cardiac muscle
``` Involuntary •Striated •Mononucleated •Branched •Intercalated discs separated each cardiac muscle cell ```
168
Smooth muscle
Involuntary •Non-striated •Mononucleated •Unbranched
169
Neuron
A nerve cell
170
Parts of the neuron
``` Axon •Dendrite •Soma •Axon hillock •Neuroglial cells ```
171
Muscles that move neck/head
Sternocleidomastoid
172
STERNOCLEIDOMASTOID
Creates widest portion of the neck; Anatomical guide for finding the carotid artery for arterial embalming; named for origin/insertion: origin—sternum and upper surface of clavicle, insertion—mastoid process
173
MUSCLES OF MASTICATION/CHEWING
MASSETOR: Thick, flat quadrilateral muscle that raises and lowers jaw; origin—lower border of zygomatic arch, insertion—lateral surface of the mandible • TEMPORALIS: The largest and strongest muscle of mastication; fan-shaped and located above the ear; named for location: located over temporal bone
174
Muscles that move that pectoral girdle
Trapezius, lavatory scapulae, pectoral is minor
175
TRAPEZIUS:
Raises the bones of the pectoral girdle (clavicles and scapulae); origin—occipital bone/cervical and thoracic vertebrae, insertion—clavicle/spine/scapula; named for its shape: it’s a trapezoid
176
LEVATOR SCAPULAE
Named for its function: it raises the scapula; origin—cervical vertebrae, insertion—medial margin of scapula
177
PECTORALIS MINOR
Thin flat muscle that assists the pectoralis major (which moves the arm); raises ribs and pulls scapula forward and downward
178
Muscles that move the arm
Coracobrachialis , perctorialis major, latissimus Dorsi, deltoid, subscaplaris, infraspinatus, supraspinatus
179
CORACOBRACHIALIS
Flexes and adducts arm; origin—scapula, insertion—shaft of humerus
180
PECTORALIS MAJOR:
Flexes, adducts, and rotates arm; origin—clavicle/sternum/ribs, insertion—humerus
181
LATISSIMUS DORSI:
Wings of the back;” named for location: on the dorsal side of the body; Mr. Jones (and swimmers) have nice definition in these muscles
182
DELTOID
Flexes, adducts, and extends arm; located at top of arm/shoulder; named for its shape: it’s a triangle
183
SUBSCAPULARIS
Rotates arm medially; named for location: located on the underside of scapula
184
INFRASPINATUS
Rotates arm laterally; named for location: located below the spine of scapula
185
SUPRASPINATUS
Rotates arm laterally; named for location: located above the spine of scapula
186
Muscles that move the forearm
Biceps brachii, brachialis , brachioradialis, triceps brachii
187
BICEPS BRACHII
Rotates arm laterally and flexes elbow; named for divisions of attachment: two heads/bellies
188
BRACHIALIS
Flexes elbow; named for location: located next to brachial vessel; origin—anterior shaft of humerus, insertion—ulna
189
BRACHIORADIALIS
Flexes elbow; Flexes elbow; named for location: located next to radius; origin—distal lateral end of humerus, insertion—lateral surface of radius
190
TRICEPS BRACHII:
Extends elbow; named for divisions of attachment: three heads/bellies
191
Muscles that move the hand
Flexor carpi radialis, flexor Carib ulnar is, extensor digitorum
192
FLEXOR CARPI RADIALIS:
Reduce angle of wrist on thumb side (flexes wrist/abducts hand); its name gives away location and function (literally flexes carpals along radius)
193
FLEXOR CARPI ULNARIS:
Reduce angle of wrist on pinky side (flexes wrist/abducts hand); its name gives away location and function (literally flexes carpals along ulna)
194
EXTENSOR DIGITORUM:
Extends fingers; its name gives away function (literally extends digits)
195
Muscles of the abdominal wall
External obique, internal oblique, transverse abdominis, recuts add ominous, linea alba
196
EXTERNAL OBLIQUE
Most superficial oblique muscle of abdomen; origin—lower ribs, insertion—iliac crest/linea alba; named for depth/ direction of fibers: external and oblique (diagonal)
197
INTERNAL OBLIQUE:
Runs deep to the external oblique muscle of abdomen; origin—crest of ilium/inguinal ligament, insertion—cartilage of lower ribs/linea alba/pubis; named for depth/direction of fibers: internal and oblique (diagonal)
198
TRANSVERSE ABDOMINIS:
Deepest layer of abdominal muscle; origin—costal cartilage of lower ribs/lumbar vertebrae/iliac crest/inguinal ligament, insertion—linea alba/crest of pubis; named for direction of fibers/location: transverse (horizontal) and abdomen
199
RECTUS ABDOMINUS:
Six pack” muscles; long strap-like muscles; origin—pubis, insertion—xiphoid process and costal cartilages; can compress abdomen and flex vertebrae
200
LINEA ALBA:
The aponeurosis that connects rectus abdominus; most medial aponeurosis of body
201
Muscles that move the thigh (7)
PSOAS MAJOR: [So-Es] anatomical landmark for finding the external iliac artery for arterial embalming (especially important in post-mort cases or if arterial system is compromised); origin—lumbar vertebrae, insertion—femur • GLUTEUS MAXIMUS: Largest and strongest muscle in the body; named for size: it’s big • GLUTEUS MINIMUS: Assists the gluteus maximus; named for size: it’s not big • ADDUCTOR BREVIS: Part of femoral triangle; named for function: adducts thigh; brevis means short • ADDUCTOR LONGUS: Part of femoral triangle; anatomical landmark for finding the femoral artery; named for function: adducts thigh; longus means long • ADDUCTOR MAGNUS: Part of femoral triangle; named for function: adducts thigh; magnus means large • GRACILIS: Most medial muscle along inside of thigh
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Muscles that move the leg (7total02 groups, 1 lone muscle) 4 front , 3 back, 1 strap .
SARTORIS: Strap-like muscle that crosses thigh from hip (lateral) to knee (medial) on anterior side of thigh HAMSTRING GROUP: The posterior set of muscles along the back of thigh; generally flex and rotate knee. • Biceps femoris: Named for divisions of attachment: two heads (biceps) along femur • Semitendinosus: Runs along medial surface of tibia • Semimembranosus: Runs along medial condyle of tibia QUADRICEPS GROUP: The anterior set of muscles along the front of thigh; generally extend knee. CHICKEN LEG. • Rectus femoris: Most anterior, superficial layer of muscle; like the first fleshy tear-drop of meat you bite off of a chicken leg • Vastus lateralis: Lateral side of the anterior portion of the thigh • Vastus medialis: Medial side of the anterior portion of the thigh • Vastus intermedius: Runs in-between (intermedial) the lateral and medial muscles on anterior muscle group, UNDER the rectus femoris; like the last bit of meat you strip off a chicken leg bone
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Muscles that move the foot (6)
leg. • TIBIALIAS ANTERIOR: Dorsiflexion (on heel) and inversion (toes inward) of foot; origin—tibia, insertion—tarsal; named for location: on anterior of tibia • GASTROCNEMIUS: Plantar flexion (on toes) of foot and flexes knee; has a laterial and medial head; forms calf with soleus; origin—condyles of femur, insertion—posterior surface of calcaneus • SOLEUS: Thick, fan-shaped muscle under gastrocnemis (forms calf with gastrocnemius); plantar flexion of foot; origin—head & shaft of fibula/posterior surface of tibia, insertion—posterior surface of calcaneous • PLANTARIS: Long strap-like muscle between soleus and gastrocnemis; named for function: plants foot; origin—femur, insertion—calcaneus; posterior to knee • TIBIALIS POSTERIOR: Plantar flexion and inversion of the foot; deepest of the muscles on the back of the leg (runs behind tibia); helps connect fibula and tibia to ankle bones • FIBULARIS LONGUS: Long, strap-like muscle on lateral side of leg; runs alongside fibula and connects bones via a tendon that passes the lateral malleolus 4
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Arthrology
The Study of Joints
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A joint
is an articulation (union) or two or more bones.
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Immovable joints
Sutures are only between flat bones of the skull where the broad margins of adjacent bones grow together and unite by a thin layer of dense connective tissue called a sutural ligament.
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Slightly movable joints
Only limited movement is possible. | ●Example - pubic symphysis and the sacro-iliac articulation
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Freely movable joints
Synovial joints allow free movement and they are more complex structurally than fibrous or cartilaginous joints. ●Example - hip and shoulder(ball-and-socket), elbow and knee (hinge)
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Total bones in the body
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Function of the skeletal system
``` Support and protection ●Movement ●Bone cell formation (hematopoiesis) ●Inorganic salt storage ●Energy storage ```
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Bone Structure
Bones are classified according to their shape: ●Long bones consist of a shaft with two ends – Ex: femur, humerus ●Short bones are cube-like – Ex: carpals, tarsals ●Flat bones are thin and usually curved – Ex: sternum, most skull bones ●Irregular bones are not long, short, or flat. Ex: vertebrae ●Sesamoid bones develop within a tendon. Ex: patella
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Axial (80 bones)
``` Skull (22 bones and 6 ear ossicles) ●Hyoid (1 bone) ●Vertebrae (26 bones) ●Sternum (1 bone) ●Ribs (24 bones) ```
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Appendicular (126 bones)
Upper extremities and pectoral girdle (64 bones | ●Lower extremities and pelvic girdle (62 bones)
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Frontal
Articulates: ●Along the coronal suture with the parietal bones ●Parts of the frontal bone include: supraorbital margins, superciliary arches, glabella, frontal eminences, frontal sinuses
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Parietal
Articulates: ●Anteriorly with frontal bones at the coronal suture ●Posteriorly with the occipital bone at the lambdoidal suture ●Laterally with temporal bones at squamous suture; ●Between bones at sagittal suture
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Occipital bone
Articulates: ●With paired parietal bones along the lambdoidal suture ●Contains the foramen magnum (“large hole”) and the external occipital protuberance ●Occipital condyles - rounded processes on either side of foramen magnum which articulate with the first vertebra (atlas)
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Temporal bones
``` Articulates: ●Inferiorly to parietal bones at squamous suture (appropriately called the squamous portion) ●Petrous portion – ●Ear ossicles (6) ●Malleus (2) ●Incus (2) ●Stapes (2) ●Carotid canal ●Parts of the temporal bones: ●Zygomatic processes ●External auditory meatus ●Styloid processes ●Mastoid process ●Mandibular fossa ```
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Sphenoid bone (1)
Butterfly shaped bone; spans the floor of the cranium ●Contains ●Sphenoid sinuses ●Sella turcica (supports the pituitary gland)
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Ethmoid bone
Complex shape; on either side of the nasal cavity ●Contains ●Ethmoid sinuses ●Cribiform plate ●Perpendicular plate (forms superior portion of the nasal septum) ●Crista galli (serves as attachment for the meninges)
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Facial Bones (14)
Nasal bones (2) ●Form bridge of the nose •Lacrimal bones (2) ●Median walls of orbit •Zygomatic bones (2) ●Cheek bones; temporal process projects posteriorly and articulates with the zygomatic process of temporal bone •Maxillary bones (maxilla) 2 ●Upper jaw; contains the alveolar process and maxillary sinus •Palatine process (2) ●Posterior portion of the hard palate; contains the maxillary process
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Facial Bones (con’t)
``` Vomer (1) ●Inferior portion of the nasal septum •Inferior nasal concha •Mandible (1) ●Lower jaw; composed of ●Body ●Alveolar process ●Mental protuberance ●Angle ●Ramus ```
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Bones of the Axial Skeleton
``` Hyoid bone ●In neck, between lower jaw and larynx ●Supports tongue •Veterbral column ●Cervical vertebrae #1 – atlas ●Cervical vertebrae #2 – axis •Sternum ●Manubrium ●Body ●Xyphoid process ```
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Ribs
12 pair ●True ribs – upper 7 ●False ribs – remaining 5 ●Floating ribs – 11th and 12th pair (do not articulate anteriorly)
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Bones of the Upper Extremities and Pectoral Girdle
``` Clavicle (2) – collar bone •Scapula (2) – shoulder blade •Humerus (2) – upper arm bone •Radius (2) – forearm bone (thumb-side) •Ulna (2) – forearm bone (pinky-side) •Carpals (16) – wrist bones •Metacarpals (10) – hand •Phalanges (28) - fingers ```
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Bones of the Lower Extremities and Pelvic (hip) Girdle
Os coxa (2) ●Ilium: largest uppermost flaring portion ●Iliac crest – prominence of the hip; contains the acetabulum (articulates with the head of the femur); hole in each coxal bone is obturator foramen) ●Ischium: lowest, L-shaped portion ●Pubis: anterior portion ●Bladder rests upon it; articulates at the pubic symphsis •Femur (2) – thigh •Patella (2) – kneecap
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Bones of the Lower Extremities and Pelvic (hip) Girdle (con’t)
Tibia (2) – shin bone ●note the location of the medidal malleolus (bulge of the ankle) •Fibula (2) – thin bone lateral to the tibia ●note the location of the lateral malleolus (lateral ankle bulge) •Tarsals (14) – ankle bones ●Talus – articulates with the tibia and fibula ●Calcaneus – heel bone •Metatarsals (10) – foot •Phalanges (28) – toes
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PURPOSE OF SKELETON:
Support and protection ▪ Movement: in conjunction with muscles ▪ Bone cell formation: Hematopoiesis or formation of erythrocytes/red blood cells in “spongy bone” at the end of cancellous or long bones ▪ Inorganic salt storage: Na, Ca, K, Mg stored in diaphysis/compact bone ▪ Energy storage: Epiphyseal plate marks transition from compact bone to spongy bone where fat or “yellow marrow” is stored
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AXIAL SKELETON:
80 bones located in head, neck, torso
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APPENDICULAR SKELETON:
126 bones located in upper and lower extremities
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PECTORAL GIRDLE:
Superior (top) half; 64 bones
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PELVIC GIRDLE
Inferior (lower) half; 62 bones
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BONE CLASSIFICATIONS:
LONG BONES: Shaft with two ends (ex. humerus, femur) o SHORT BONES: Cube like bones (ex. carpals in wrists, tarsals in ankle) o FLAT BONES: Thin and usually curved (ex. sternum, ribs, cranial bones) o IRREGULAR BONES: Not long, short, or flat (ex. vertebrae) o SESAMOID or ROUND BONES: Small and nodular, embedded in tendons, and articulate with joints (ex. patella)
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ARTHROLOGY
The study of joints
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JOINT
An articulation (union) of two or more bones
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SUTURES
Immovable joint; between flat bones of the skull where the broad margins of adjacent bones grow together and unite by a thin layer of connective tissue called a sutural ligament; ex. five (5) cranial sutures or fontanels, which do not seal/harden until between ages 19-25
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Coronal suture
Posterior to the frontal bone; anterior to parietal bones
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Sagittal suture
Runs medial between parietal bones; anterior meets coronal suture/frontal bone; posterior meets lamboidal suture/occipital bone
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Squamous sutures (2
One on both the right and the left, separating the parietal bone and the temporal bone
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Lamboidal suture:
Posterior to the parietal bones; anterior to the occipital bone; perpendicular to the sagittal suture
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ATTACHMENTS/CONNECTIVE TISSUE:
Tendons: Attach muscle to bone ▪ Ligaments: Attach bone to bone, usually at a joint ▪ Aponeurosis: Attach muscle to muscle
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FORAMEN
Hole
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SINUS
Cavity in skull to reduce the weight of bone
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PROCESS
Projection (ex. mastoid process)
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MEATUS
Passageway (ex. external auditory meatus)
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FOSSA
Shallow depression (ex. mandibular fossa)
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CONDYLE
Rounded process at the end of a bone, usually at the articular end (ex. mandibular condyle)
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CRANIAL BONES:
Eight (8) in total; need to know all eight; all flat except sphenoid and ethmoid
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FRONTAL
Articulates at coronal suture anterior to the parietal bones
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FRONTAL
Supraorbital margins: Roof of the eye orbit ▪ Superciliary arches: Where your eyebrows would be ▪ Glabella: Space between eyes; superior to nasal bones ▪ Frontal eminences: Superior to eyebrows; part of forehead ▪ Frontal sinuses: Located above each eye at the midline; reduce weight of skull
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PARIETAL
Articulates anteriorly with the frontal bone at the coronal suture; posteriorly with the occipital bone at the lamboidal suture; laterally at the temporal bones at the squamous suture; between right/left at the sagittal suture
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OCCIPITAL
Articulates with paired parietal bones along the lamboidal suture; spans the floor of skull Foramen magnum: “large hole;” where the inferior of brainstem connects to the spinal cord
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TEMPORAL
Articulates inferiorly to parietal bones at squamous suture (on right and left)
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TEMPORAL
Zygomatic processes: Projects anteriorly in region of external auditory meatus; joins temporal process/zygomatic bone to form prominence of cheek (zygomatic arch); height of cheekbones ▪ External auditory meatus: Near inferior of temporal bone; hole leads to interior of ear ▪ Styloid processes: Long, pointed projection on temporal bone; only portion of temporal bone unhelpful in restoration as it is to internal to be seen/felt ▪ Mastoid process: Rounded projection posterior to external ear where certain neck muscles attach ▪ Mandibular fossae: Depressions that articulate with the mandibular condyles
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SPHENOID
Butterfly or moth shaped bone in the anterior floor of the cranium; contains sinuses
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ETHMOID
Complex shaped bone located on either side of nasal cavity
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ETHMOID
Ethmoid sinuses: Reduce weight in skull ▪ Cribiform plate: Looks sponge-like because it has openings for sense of smell; this is region that is pierced during embalming process ▪ Perpendicular plate: Superior portion of the nasal septum ▪ Crista galli: (Cock’s comb) Triangular point along cribiform plate that is point of attachment for brain’s membranes
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FACIAL BONES: Fourteen (14) total
NASAL (2): Form bridge of the nose; one on each side; glabella is superior to nasal bones o ZYGOMATIC (2): “Cheek bones” (or ‘apple’ of cheek); right and left ▪ Temporal process: Projects posteriorly and articulates with zygomatic process of temporal bone o MAXILLARY (2): Upper jaw (right/left); meets at bottom of eye, forms sides and floor of nasal cavity, and holds upper teeth o VOMER (1): Inferior portion of nasal septum (superior is the perpendicular plate); nose sits on top of vomer o MANDIBLE (1): The single movable bone of the face; lower jaw bone; contains all lower teeth ▪ Body: The greater width of the mandible (includes mental foramen) ▪ Ramus: Vertical portion of the mandible ▪ Angle: The anterior corners of the mandible ▪ Mandibular condyle: Superior posterior of the ramus; articulates with the mandibular fossa ▪ Coronoid process: Superior anterior of the ramus; provides point of attachment for chewing muscles ▪ Alveolar process: Ridges that hold lower teeth in place (also called dental alveoli)
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HE RESPIRATORY SYSTEM | • GENERAL FUNCTION:
Respiration which is the exchange of gases between the atmosphere and body cells. Ventilation means breathing and must be considered at the five organization levels and associated tasks.
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THE RESPIRATORY SYSTEM
The organism takes a breath (inhales), which is ventilation.* o The organ system (nose, mouth, lungs) uses external respiration to move the air into the lungs.* o The organs (lungs) transport gases to cells by way of the bloodstream. o Tissue, in this case connective/blood, is involved in internal respiration which gets gases to red blood cells (RBCs). o Cells, in this case RBCs, exchange CO2 to O2 using cellular respiration.
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ORGANS include:
Nose: External nares/nostrils; bone/ cartilage with internal hairs that filter the air you breathe in. o Nasal cavity: Hollow space behind nose; separated by the septum; bone/cartilage lined with mucous membranes that filter, warm, and moisten incoming air; conduct air to pharynx. o Sinuses: Sinuses are cavities that reduce the weight of the skull and serve as resonant chambers; located in the ethmoid, sphenoid, maxillary, and frontal bones of the skull. o Pharynx: “Throat;” nasopharynx, osopharynx, and laryngopharynx; wall of skeletal muscle lined with mucous membranes; passageway for air and food. o Larynx: “Voice box;” home of the vocal cords; sits superior to the trachea and the esophagus sits posterior to the trachea; glottis is the opening of the larynx and epiglottis is the flap that covers and closes the larynx when you swallow to keep food etc. out of airway; laryngitis is an inflammation of the larynx. o Trachea: “Windpipe;” located in the mediastinum extending from the larynx; looks a bit like a vacuum hose due to ridges of hyaline cartilage; anything above trachea is upper-respiratory, anything below is lower respiratory (basically lungs); origin of bronchi. o Bronchial Tree: Located in the lungs; levels (bifurcations) to know: 1. Primary bronchi-the first parts to enter the lungs; 2. Secondary bronchi-branch into each lobe; 3. Tertiary bronchioles; 4.Terminal bronchioles-end of the bronchiole tree; 5. Respiratory bronchioles-start of respiratory branches; 6. Alveolar duct-passageway; 7. Alveoli sac-surrounds alveoli, full of capillaries that make embalming easier; 8. Alveoli-primary sites of gas exchange in the respiratory system o Lungs: Right lung has three lobes (superior/upper, primary, and inferior/lower) and left has two lobes (superior/upper and inferior/lower) as well as the cardiac impression (room for the heart.
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THE URINARY SYSTEM | • FUNCTION:
Elimination of wastes and fluids
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Kidney
Bean-shaped organ that helps to regulate blood pressure, forms urine, helps to regulate blood composition, and aids in balancing body’s pH (indirectly affects the body’s cardiovascular system); kidneys are retroperitoneal and the right kidney sits lower than the left due to its location inferior to the right lobe of the liver
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Ureter
Channels/tubes that allow urine to pass from the kidneys to the urinary bladder
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Urinary Bladder:
Hollow organ that is able to distend or expand and store urine; lined with smooth muscle and transitional cells which allow for its flexibility; in females, bladder sits just under the uterus
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Urethra
Allows urine to pass from urinary bladder to the outside of the body; longer in men than women
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Nephro-/Renal:
If you see these terms, you can be fairly certain they refer to the urinary system (kidneys)
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Renal Artery
Supplies oxygenated blood TO the kidney (arteries carry blood away from heart); meets the abdominal aorta
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Renal Vein:
Sends blood back to the heart for oxygenation after filtering it (veins carry blood to the heart); meets the inferior vena cava
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Renal Pyramids
Can be seen in cross-cuts; structures of the kidney that contain nephrons where urine is produced
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Nephrons
Smallest unit in kidney; where urine is produced
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Neprolith
Kidney stone
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Neprolithiasis
Process by which kidney stones are formed
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Urea
Precursor to uric acid which is main component of urine
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Effects of Urea on formaldehyde:
Urea increases nitrogenous bases within urine and has a neutralizing effect on formaldehyde; ammonia (NH3) is a by-product that also neutralizes formaldehyde; increasing the strength of solution in some cases (ex. those who experienced renal failure) can keep it from being neutralized by ammonia
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Composition of urine:
``` Urine is (or should be) 95% water (also contains urea and uric acid, as well as creatinine); pH can vary from 4.5 to 8 but 7.2 was described as “normal” in class lecture o pH scale: See below. 0-7: Acidic; 7: Neutral; 7-10: Alkaline/Basic. Vinegar is an ```
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Respiration : Five Parts
Pulmonary ventilation* = breathing; ●External respiration* = air into lungs; gas exchange (O2 load/ CO2 unload); air out; ●Transport of respiratory gases = gases in blood transported from lungs to body cells and back to lungs; ●Internal respiration = exchange of gases at body capillaries (O2 unload/CO2 load). ●Cellular respiration = use of oxygen by cells to produce energy (production of CO2). * Only these two portions are included in the respiratory system.
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Organ of the respiratory system
Nose external nares or nostrils , bone and cartilage with internal hairs traps large particles. Nasal cavity- bone and cartilage lined with mucous membrane and moistens incoming air .
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Organs of the Respiratory System
Nasal conchae- superior , middle and inferior divide nasal cavity into a serine of groove-like passageways Pharynx- wall of skeletal muscle line with mucous membranes. Passageway for air and food Nasopharynx, oropharynx, laryngopharynx
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Organs of Respiratory System
Larynx( or voice box) Thyroid cartilage, epiglottis closes off the airway during swallowing. Two pairs of vocal folds Glottis= triangular slit; opening between two pairs of vocal cords Cricoid Cartilage= ring of hyaline cartilage attached to first ring of trachea; site of tracheotomy Trachea (windpipe- Location: mediastinum; anterior to esophagus; extends from larynx to T5 Structure: 16-20 incomplete rings of hyaline cartilage + C-rings Function= support against collapse; continue to warm, moisten, and filter air.
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Organs of the respiratory system
``` Bronchial tree (witching lungs) Primary bronchus leads into each lung and then branches into secondary bronchi, which branch to each lobe and then branch into tertiary bronchi which each serve one of the 10 lobules ( bronchopulmonary segment) that divide into bronchioles which branch several times into tubes called terminal bronchioles . ```
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Organs of the respiratory system
Lungs | Location: thoracic cavity
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Urinary system consists of
Kidneys, ureters, urinary bladder and urethra
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Location of kidneys
The kidneys which are positioned retroperitoneally lie on either side of the vertebral column, high on the posterior wall of the abdominal cavity
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Functions of the kidneys
* removal of metabolic wastes from the blood and excretion to the outside of the body * regulation of red blood cell production, blood pressure, calcium ion absorption, and the volume, composition, and pH of the blood
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Urine composition
about 95% water * usually contains urea, uric acid, and creatinine * may contain trace amounts of amino acids and varying amounts of electrolytes * volume varies with fluid intake and environmental factors
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Elimination of Urine
``` nephrons • collecting ducts • renal papillae • minor and major calyces • renal pelvis • ureters • urinary bladder • urethra • outside ```
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Ureters
``` 25 cm long • extend downward posterior to the parietal peritoneum • parallel to vertebral column • in pelvic cavity, join urinary bladder • wall of ureter • mucous coat • muscular coat • fibrous coat ```
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Urinary Bladder
hollow, distensible, muscular organ located within the pelvic cavity, posterior to the symphysis pubis and inferior to the parietal peritoneum
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Urethra
tube that conveys urine from the urinary bladder to the outside of the body
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The nervous system (neurology)
Neurology
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THERE ARE TWO DIVISIONS TO THE BODY’S NERVOUS SYSTEM:
Central Nervous System and peripheral nervous system
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Brain
is the largest and most complex part. It has three parts: the cerebrum (largest part; “gray matter”), the cerebellum (posterior, inferior to the cerebrum, smaller portion), and the brain stem (comprised of—from top to bottom—the midbrain, the pons, and the medulla oblongata). ▪ The brainstem connects the brain and the spinal cord.
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How many nerves in the cranial ?
12
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The spinal cord has
31 segments and, thus, 31 pairs of nerves.
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Brain
Remember brain purge is creamy, white and/or pink when tinged with blood.
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he brain has spaces, called
Ventricles
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ventricles
that are filled with cerebrospinal fluid (CSF). The 1st and 2nd ventricles are in each cerebral hemisphere. The 3rd ventricle is anterior to the cerebellum. The 4th ventricle is located at most inferior portion of the cerebellum.
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Meniges
cover the entire brain and brain stem. It is composed of three layers: the dura mater (most superficial layer, very “dura”ble or tough); the arachnoid mater (looks like a web, blood supply source); and the pia mater (similar to saran wrap, deepest layer).
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Sulci
plural of sulcus) are the lines in the gray matter of the brain. Gyri (plural of gyrus) or convolutions are the mounds or bumps of the gray matter. ▪ The longitudinal fissure separates the hemispheres of the brain.
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THE LYMPHATIC SYSTEM
The lymphatic system is strongly correlated to immunity—going all the way back to chapter three with lymphocytes (monocytes) being agranular and “eating” disease in the body. The system distributes white blood cells to fight infection.
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Lymph nodes/glands are located in the following areas of note:
CERVICAL: neck o AXILLARY: under arms o THORACIC: thoracic cage o INGUINAL: Groin
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Organs of the lymphatic system include:
o TONSILS (didn’t really discuss) o SPLEEN: Largest organ of the lymphatic system; shaped like a tongue. Inferior/posterior to the stomach. Due to the amount of infection it holds, it could be toxic if it ruptures. o THYMUS: This is where white blood cells originate (t-lymphocytes). Sits on top of the heart. The thymus is larger in infancy because infants have no exposure/immunity to anything. It is much smaller as you age/develop immunity.
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cistern chyli
is important to remember as the central location or the distribution center of the lymphatic system.
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Characteristics of the central nervous system
- consists of the brain and the spinal cord - brain is the largest and most complex portion - brain stem connects the brain and the spinal cord
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The brain
Also known as encephalon
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Division of the brain
Cerebrum-largest part of the brain Cerebellum- posterior , smaller portion of the brain. Posterior and inferior to the cerebrum Brain stem- composed of the midbrain pons, and medulla oblongata. All attach the brain to the spinal cord.
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Divisions of the brain ventricles
Four cavities filled with cerebrospinal fluid.
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Meninges
Composed of three layers Dura mater- outermost layer Arachnoid mater- middle layer Pita mater- innermost layer
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Cerebrospinal fluid
Completely surrounds brain and spinal cord
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Spinal cord
Two functions: Center for spinal reflexes Sends nerve impulses to and from the brain Has 31 segments and each gives rise to a pair of spinal nerves
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Peripheral nervous system
Consists of the nerves that branch from the CNS
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Endocrine glands
Secrete substances into the internal environment, hormones secreted into the bloodstream.
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Exocrine glands
Substances secreted into surrounding cells and act as “messengers” to the surface of the skin
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Paracrine glands
Substances secreted into surrounding cells and act as “messengers” to stimulate the activity of those cells
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Location/Function of the following Endocrine Glands
Pituitary - brain Thyroid- throat Parathyroid- throat Suprarenals (adrenals)- superior to the kidneys. Gonads- reproductive organs Pancreatic islet (Lesley’s of Langerhans)- pancreas
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lymphatic system
Functions of the lymphatic system - transportation of interstitial fluids - fight infection
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Lymphatic system
``` Accurately locate the following: Lymph vessels Cisterns chyli Thoracic ducts Right lymphatic duct ```
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The lymphatic system (structures)
``` Lymph nodes Lymph organs Tonsils Spleen Thymus ```
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KIDNEYS
produce urine, regulate blood pressure, and rid body of toxins. The smallest unit within the kidney is the nephron.
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URETERS
transport urine from the kidneys to the urinary bladder
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URINARY BLADDER
a hollow organ with the ability to distend that is responsible for the storage of urine until release. Lined with smooth muscle.
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URETHRA
transports urine from the urinary bladder to the outside. The urethra is longer in men than in women.
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transports urine from the urinary bladder to the outside. The urethra is longer in men than in women.
takes blood from the kidney back to the heart while the renal artery brings oxygenated blood from the heart to the kidney.
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urea
The buildup of urea (which forms uric acid) in the tissues can lead to urine-like smell.
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Urine has an excessive amount of nitrogenous waste material, especially ammonia. Ammonia neutralizes the effect of formaldehyde, thus it may be necessary to use an arterial solution that may have a higher index (strength) in a case that has had kidney complications to counteract the nitrogenous bases.
Urine has an excessive amount of nitrogenous waste material, especially ammonia. Ammonia neutralizes the effect of formaldehyde, thus it may be necessary to use an arterial solution that may have a higher index (strength) in a case that has had kidney complications to counteract the nitrogenous bases.
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The formation of kidney stones is called nephrolithiasis, while kidney stones are known as nephroliths.
The formation of kidney stones is called nephrolithiasis, while kidney stones are known as nephroliths.
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The Endocrine System
The endocrine system is responsible for secreting hormones. Hormones are chemicals that are released either into the bloodstream or to the outside of the body and are designed to carry out a particular function.
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The endocrine system consists of
▪ Endocrine glands/organs – secrete directly into the bloodstream ▪ Exocrine glands/organs – secrete to outside of the body (sweat glands, sebaceous (oil) glands ▪ Heterocrine glands/organs – perform both endocrine and exocrine functions ie. the pancreas ▪ Autocrine glands – secrete hormones to activate themselves to perform specific function ▪ Paracrine glands – secrete to target cells which will in turn carry out specific functions
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Endocrine glands/organs
secrete directly into the bloodstream
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Exocrine glands/organs –
secrete to outside of the body (sweat glands, sebaceous (oil) glands
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Heterocrine glands/organs
perform both endocrine and exocrine functions ie. the pancreas
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Autocrine glands
secrete hormones to activate themselves to perform specific function
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Paracrine glands
secrete to target cells which will in turn carry out specific functions
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The brain is also known as the
encephalon
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The largest hemispheres of the brain are called the
cerebrum
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The smaller portion of the brain that is posterior and inferior to the cerebrum is the
Cerebellum
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The brainstem
5) connects the brain to the spinal cord (8). The three parts of the brainstem are the midbrain (A), pons (B), and medulla oblongata (C)
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ventricles
3) are spaces is the brain filled with cerebrospinal fluid (CSF)
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pituitary gland
4) sits at the base of the brain
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The lines visible on the brain are called
sulci (2) (sulcus, singular) and the “bumps/humps” created by the lines are called gyri (1) (gyrus, singular) and can also be referred to as convolutions.
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The Lymphatic System
The lymphatic system works in conjunction with our immune system to help fight infection
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Organs within the lymphatic system include:
``` ▪ Spleen (largest lymphatic organ) ▪ Lymph vessels ▪ Lymph nodes – the largest concentration located in the following: • Cervical (neck region) • Thoracic (chest) • Inguinal (groin) • Axillary (under the arm) ``` ▪ Lymph ▪ Tonsils ▪ Thymus (located atop the heart and is larger during infancy than adulthood)
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Origin
where the muscle is attached to a fixed point
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Insertion
where the muscle is attached to a movable point
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Belly
the fleshy portion of the muscle between the origin and insertion
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Aponeurosis
attach muscles to other muscles
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Muscles are named according to the following:
Action – levator palpebrae superioris •Number of heads/divisions of attachment– triceps brachii •Location – temporalis •Shape – trapezius •Origin and insertion – occipitofrontalis •Size – gluteus maximus •Direction of fibers – transverse abdominis •Superficial/deep – external oblique/internal oblique
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MUSCLE ACTIONS
Abduction | •Adduction
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MUSCLE ACTIONS
Pronation •Supination •Inversion •Eversion ``` Flexion •Extension •Hyperextension •Dorsiflexion •Plantar flexion ``` * Rotation * Circumduction
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MUSCLES OF FACIAL EXPRESSION
``` Occipitofrontalis (Epicranius) Orbicularis oculi Orbicularis oris Procerus Buccinator ```
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MUSCLES OF THE CRANIUM
Occipitofrontalis/Epicranius (1) •Named according to its origin and insertion/location (epicranius) •Two broad bellies of muscle are connected by an aponeurosis – galea aponeurotica •Occipitalis – draws scalp backward •Frontalis – when contracted, raises the eyebrows
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MUSCLES OF THE MOUTH
Orbicularis oris •Round muscle that encircles the •Contraction closes the lips
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MUSCLES OF THE MOUTH (CON’T)
Levator labii superioris alaeque nasi •Levator labii superioris •Zygomaticus minor •Zygomaticus major •Contraction of this muscle draws the corners of the mouth in a superior direction •Also known as “the laughing muscle” because when contracted for long periods, the muscle can begin to ache Zygomaticus minor Contraction of this muscle draws the corners of the mouth in a superior direction •Also known as “the laughing muscle” because when contracted for long periods, the muscle can begin to ache
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MUSCLES OF THE MOUTH (CON’T)
Buccinator •Also known as “the trumpeter’s muscle” •Located in the soft area of the cheek
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MUSCLES OF THE NECK
Platysma •Broad, flat, and superficial •Upon contraction, lowers the jaw •Creates transverse furrows; platysmal sulci Sternocleidomastoideus •Measure the widest part of the neck •Origin – the sternum and the clavicle •Insertion – the lateral surface of the mastoid process •Upon contraction, pulls the head sideways
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MUSCLES OF MASTICATION
Temporalis | Masseter
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MUSCLES THAT MOVE THE PECTORAL GIRDLE
Levator scapulae Trapezius Pectoralis minor
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MUSCLES THAT MOVE THE FOOT
``` Tibialis anterior Tibialis posterior Fibularus longus Gastrocnemius Soleus Plantaris ```
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MUSCLES OF THE ABDOMINAL WALL
* External oblique * Named according to being closer to the surface and the direction of the fibers * Internal oblique * Named according to being closer to the surface and the direction of the fibers * Transverse abdominis * Named according to being closer to the surface and the direction of the fibers * Rectus abdominis * Named according to location * Linea alba * Dense connective tissue that separates the rectal sheath
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MUSCLES THAT MOVE THE HAND
``` Flexor carpi ulnaris •Named according to action •Flexor carpi radialis •Named according to action •Extensor digitorum •Named according to action ```
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MUSCLES THAT MOVE THE FOREARM
``` Brachioradialis •Named according to origin and insertion •Brachialis •Named according to location •Biceps brachii •Named according to divisions of attachement •Triceps brachii •Named according to divisions of attachement ```
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MUSCLES THAT MOVE THE ARM
``` Coracobracialis •Deltoid •Named according to shape •Infraspinatus •Named according to location •Supraspinatus •Named according to location •Subscapularis •Named according to location •Pectoralis major •Broad, flat muscle of the chest that adducts the arm when contracted ```
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MUSCLES THAT MOVE THE FOOT
``` Tibialis anterior •Named according to location •Tibialis posterior •Named according to location •Fibularus longus •Named according to location •Gastrocnemius •Calf muscle; two divisions of attachment •Soleus •Feather shaped muscle ```
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What are the respiration : Five Parts
Pulmonary ventilation, external reparation, transport of respiratory gases, internal respiratory, cellular respiration
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pulmonary ventilation
Breathing
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External respiration
Air into lungs; gas exchange (o2load/co2 unload); air out
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Transports of respiratory gases
Gases in blood transported from lungs to body cells and back to lungs
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Internal respiration
Exchange of gases at body capillaries ( o2 unload/co2 load)
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Cellular respiration
Used of oxygen by cells to produce energy
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Respiratory system consists of the following events
* ventilation * external respiration * transport * internal respiration * cellular respiration
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Respiration
is the process of exchanging gases between the atmosphere and body cells.
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Alveoli
gas exchanges between the air and blood occur within the alveoli • alveolar pores allow air to pass from one alveolus to another
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Breathing Mechanism
Breathing or ventilation is the movement of air from outside the body into the bronchial tree and alveoli • air movements of inspiration and expiration • changes in the size of the thoracic cavity due to changes in pressure
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Sinuses
Air-filled spaces in maxillary, frontal, ethmoid, and sphenoid bones
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Nose
Part of face centered above the mouth and inferior to the space between the eyes Nostrils provide entrance to nasal cavity; internal hairs begin to filter incoming air
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Nasal cavity
Hollow space behind nose Conducts air to pharynx; mucous lining filters, warms, and moistens incoming air
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Sinuses
Hollow spaces in various bones of the skull Reduce weight of the skull; serve as resonant chambers
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Pharynx
Chamber posterior to the oral cavity and between the nasal cavity and larynx Passageway for air moving from nasal cavity to larynx and for food moving from oral cavity to esophagus
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Larynx
Enlargement at the top of the trachea Passageway for air; prevents foreign objects from entering tra- chea: houses vocal cords
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Trachea
Flexible tube that connects larynx with bronchial tree Passageway for air; mucous lining continues to filter air
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Bronchial tree
Branched tubes that lead from the trachea to the aveol Conducts air to the alveoli; mucous lining continues to filter incoming air
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Lungs
Soft, cone-shaped organs that occupy a large portion of the thoracic cavity Contain the air passages, alveoli, blood vessels, connective tissues, lymphatic vessels, and nerves or the lower respiratory tract