Lesson Topic 1.1: Structural and Functional Organization of the Human Body Flashcards

1
Q

Anatomy:

A

science that studies structure

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2
Q

Physiology:

A

science that studies body functions

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3
Q

Anatomy (structure) determines

A

physiology (functions)

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4
Q

4 basic types tissue:

A

epithelial
connective
muscular
nervous

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5
Q

Cellular:

A

cells containing organelles

Basic unit of life

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6
Q

Tissue:

A

groups of cells and surrounding material

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7
Q

Organ:

A

group of tissues performing a common function

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8
Q

System:

A

group of organs with a common function

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9
Q

Organism:

A

contains all systems of an individual

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10
Q

Homeostasis

A

Maintaining a stable internal environment

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11
Q

Homeostasis
Examples of variable factors

A

Body temperature
Blood pressure
Water and nutrient levels

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12
Q

Components of a Feedback System

A

Receptor: Recognizes the change and sends message = input (typically by nerve pathways) to:

Control Center: Evaluates input and sends output

Effector: Attempts to change the altered variable

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13
Q

(1) Receptor

A

A receptor is a body structure that monitors changes in a controlled condition and sends information called the input to a control center.

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14
Q

(2) Control Center

A

A control center in the body, for example, the brain, sets the range of values within which a controlled condition should be maintained, evaluates the input it receives from receptors, and generates output commands when they are needed.

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15
Q

(3) Effector

A

An effector is a body structure that receives output from the control center and produces a response that changes the controlled condition.

(a) Nearly every organ or tissue in the body can behave as an effector. For example, when your body temperature drops sharply, your brain (control center) sends nerve impulses to your skeletal muscles (effectors) that cause you to shiver, which generates heat and raises your temperature.

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16
Q

Negative Feedback Systems

A

Most homeostatic control mechanisms are negative feedback systems

“Negative” means “opposite” (not “bad”)

These systems reverse a change in the controlled variable, bringing it back to “normal”

Example: high blood pressure (BP) is detected and then lowered to normal BP

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17
Q

Positive Feedback Systems

A

Few homeostatic control mechanisms are of this type

These systems strengthen a change and must be shut down by an outside force.

Examples:
Contractions of uterus cause even more contractions (and more…) at child birth
Hormonal control of ovulation
Systems that control blood clotting

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18
Q

Disorder:

A

abnormality of structure/function

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19
Q

Disease:

A

specific illness characterized by signs and symptoms

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20
Q

Symptoms:

A

subjective changes not observable from outside a person. Examples: pain, headache, nausea

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21
Q

Signs:

A

observable or measurable changes. Examples: high BP, ankle swelling, fever

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22
Q

Aging and Homeostasis

A

Normal process that:

Includes a progressive loss in the ability to maintain homeostasis

Affects all body systems

Can be slowed down or minimized by healthy living

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23
Q

Anatomical position (Figure 1-5) pg. 13

A

Stands erect facing the observer, with head level and eyes facing forward, and palms facing forward

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24
Q

Head

A

Cephalic

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25
Q

Skull

A

Cranial

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26
Q

Face

A

Facial

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27
Q

Forehead

A

frontal

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28
Q

Temple

A

temporal

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29
Q

eye

A

orbitial or ocular

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30
Q

Ear

A

otic

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31
Q

cheek

A

buccal

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32
Q

nose

A

nasal

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33
Q

mouth

A

oral

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34
Q

chin

A

mental

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35
Q

neck

A

cervical

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36
Q

breastbone

A

sternal

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37
Q

armpit

A

axillary

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38
Q

arm

A

brachial

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39
Q

front of elbow

A

antecubital

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40
Q

breast

A

mammary

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41
Q

naval

A

umbillical

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42
Q

forearm

A

antebrachial

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43
Q

hip

A

coxal

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44
Q

wrist

A

carpal

45
Q

palm

A

palmar or volar

46
Q

fingers

A

digital or phalangeal

47
Q

groin

A

inguinal

48
Q

thumb

A

pollex

49
Q

hand

A

manual

50
Q

thigh

A

femoral

51
Q

pubis

A

pubic

52
Q

anterior surface of knee

A

patellar

53
Q

leg

A

crural

54
Q

foot

A

pedal

55
Q

ankle

A

tarsal

56
Q

toes

A

digitial or phalangeal

57
Q

top of foot

A

dorsum

58
Q

great toe

A

hallux

59
Q

Front view of body

A

Anterior

60
Q

Back view of body

A

Posterior

61
Q

Base of skull

A

Occipital

62
Q

Shoulder Blade

A

scapular

63
Q

spinal column

A

vertebral

64
Q

back

A

dorsal

65
Q

loin

A

lumbar

66
Q

buttock

A

gluteal

67
Q

between hips

A

sacral

68
Q

region betweeen anus and external genitals

A

perineal

69
Q

back of hand

A

dorsum

70
Q

hollow behind knee

A

popliteal

71
Q

sole of feet

A

plantar

72
Q

heel of feet

A

calcaneal

73
Q

Prone

A

body is lyin face down

74
Q

Supine

A

body is lying face up

75
Q

superior

A

cephalic or cranial) toward the head, or the upper part of a structure. The heart is superior to the liver.

76
Q

Anterior

A

ventral) Nearer to or at the front of the body. The sternum (breastbone) is anterior to heart.

77
Q

Posterior

A

(dorsal) Nearer to or at the back of the body. The esophagus (food tube) is posterior to the trachea (windpipe).

78
Q

Medial

A

Nearer to the midline or midsagittal plane. The ulna is medial to the radius.

79
Q

Lateral

A

Farther from the midline or midsagittal plane. The lungs are lateral to the heart.

80
Q

Proximal

A

Nearer to the attachment of a limb to the trunk; nearer to the point of origin or the beginning. The humerus is proximal to the radius.

81
Q

Distal

A

Farther from the attachment of a limb to the trunk; farther from the point of origin or the beginning. The phalanges are distal to the carpals.

82
Q

Superficial

A

Toward or on the surface of the body. The ribs are superficial to the lungs.

83
Q

Deep

A

Away from the surface of the body. The ribs are deep to the skin of the chest and back.

84
Q

(1) The imaginary flat surfaces that pass through the body parts

A

sagittal, frontal, transverse, and oblique.

85
Q

(a) Sagittal plane

A

is a vertical plane that divides the body or an organ into right and left sides.

86
Q

1) Midsagittal plane-

A

when such a plane passes through the midline of the body or organ and divides it into equal right and left sides.

87
Q

2) Parasagittal plane-

A

If the sagittal plane does not pass through the midline but instead divides the body or an organ into unequal right and left sides.

88
Q

(b) Frontal plane or coronal plane

A

divides the body or an organ into anterior (front) and posterior (back) portions.

89
Q

(c) Transverse plane

A

divides the body or an organ into superior (upper) and inferior (lower) portions.

90
Q

transverse plane may also be called

A

cross-sectional or horizontal plane

91
Q

(d) Oblique plane

A

by contrast, passes through the body or an organ at an angle between the transverse plane and a sagittal plane or between the transverse plane and the frontal plane.

92
Q

a. Body cavities

A

(1) Spaces within the body that contain, protect, separate, and support internal organs.

93
Q

(a) The cranial cavity

A

formed by the cranial (skull) bones and contains the brain.

94
Q

(b) The vertebral (spinal) canal

A

is formed by the bones of the vertebral column (backbone) and contains the spinal cord.

95
Q

The major body cavities of the trunk are

A

the thoracic and abdominopelvic cavities.

96
Q

The thoracic cavity is the chest cavity. Within the thoracic cavity are three smaller cavities:

A

a) Pericardial cavity
b) Pleural cavities,
c) Mediastinum

97
Q

a) Pericardial cavity

A

a fluid-filled space that surrounds the heart,

98
Q

b) Pleural cavities

A

each of which surrounds one lung and contains a small amount of fluid

99
Q

c) Mediastinum

A

1 The central portion of the thoracic cavity is an anatomical region. It is between the lungs, extending from the sternum (breastbone) to the vertebral column (backbone), and from the first rib to the diaphragm (Figure 1-9), and contains all thoracic organs except the lungs themselves.

100
Q

Abdominopelvic cavity

A

extends from the diaphragm to the groin

101
Q

a) The upper portion, the abdominal cavity

A

contains the stomach, spleen, liver, gallbladder, small intestine, and most of the large intestine.

102
Q

b) The lower portion, the pelvic cavity

A

contains the urinary bladder, portions of the large intestine, and internal organs of the reproductive system. Organs inside the thoracic and abdominopelvic cavities are called viscera.

103
Q

A thin, slippery, double-layered serous membrane

A

covers the viscera within the thoracic and abdominal cavities and lines the walls of the thorax and abdomen.

104
Q

The parts of a serous membrane are (1) the parietal layer,

A

which lines the walls of the cavities

105
Q

the visceral layer,

A

which covers and adheres to the viscera within the cavities.

106
Q

pleura

A

The serous membrane of the pleural cavities

107
Q

pericardium

A

. The serous membrane of the pericardial cavity

108
Q

is the serous membrane of the abdominal cavity

A

peritoneum