CHAPTER 6 Flashcards

1
Q

cartilage

A

embryonic forerunner of most bones and covers many joint surfaces

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2
Q

ligaments

A

hold bone to bone at joint

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3
Q

tendons

A

attach muscle to muscle

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4
Q

human skeleton

A

made up of cartilage and fibrous membranes, later replaced by bone

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5
Q

skeletal cartilages- type of cartilage tissue

A

structure- water, avascular, no nerves. provides resilience

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6
Q

Perichondrium

A

surrounded by a layer of dense irregular tissue, contains blood vessels from which nutrients diffuse through the matrix to reach cartilage cells. acts as girdle help resist outward expansion when cartilage compresses

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7
Q

hyaline cartilage

A

most abundant skeletal cartilage, spherical chondrocytes, fine collagen fibers which not detectable microscopically. provide support with flexibility and resilience

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8
Q

4 types of hyaline cartilage

A

articular, costal, respiratory, and nasal cartilage

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9
Q

articular cartilage

A

end of bones where form movable joints

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10
Q

costal cartilage

A

connects ribs to sternum

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11
Q

respiratory cartilage

A

forms skeleton of Larynx

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12
Q

nasal cartilage

A

supports the external nose

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13
Q

elastic cartilage

A

looks like hyaline, more elastic fibers. stand up to repeated bending and maintain shape, external ear and epiglottis

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14
Q

fibrocartilage (shock absorption)

A

highly compressable cartilage, it has great tensile strength, parallel rows of collagen fibers, alternating with parallel rows of chondrocytes in lacunae. withstand heavy pressure and stretch. found in intervertebral discs, meniscus, and pubic symphysis

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15
Q

bone

A

many sizes and shapes. 270 at birth that fuse as we age, 206-adult

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16
Q

groups of bones

A

framework that supports body, levers, minerals release into blood stream (deposit and withdrawal), triglyceride storage (source of energy)

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17
Q

axial skeleton

A

central supporting axis of body. bones=skull, vertebral column, thoracic cage. function= protect, support, and carrying other body parts

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18
Q

appendicular skeleton

A

bones=upper limbs and pectoral girdle, lower limbs and pelvic girdle. bones that help append the limb to the axial skeleton. function= locomotion (move from place to place) and manipulation of the environment

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19
Q

classification of bones

A

according to shape. long bones, short bones, flat bones, and irregular bones

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20
Q

long bones

A

rigid levers for movement (humerus) elongated shape not overall size, longer than they are wide, have a shaft, and 2 ends to them. all limb bones except patella, wrist, and ankle bones.

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21
Q

short bones

A

glide within joints(carpals of wrist), bones that are cube shaped, equal in length and width. wrist and ankle bones, sesamoid

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22
Q

flat bones

A

thin often curved (ribs), thin flattened and a bit curved. sternum, ribs, scapulae, and most skull bones

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23
Q

irregular bones

A

complex shape (vertebrae), complicated shape, vertebrae and hip bones

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24
Q

functions of bones

A

support, protection of delicate organs, movement, mineral storage calcium and phosphate, production of blood cells, blood formation in marrow (hematopoesis), acid-base balance, and detoxification

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25
sesamoid
form within tendons, due to stress
26
sutural (wormian) bones
extra bones of skull, not found in everyone
27
bone structure
dense outter layer thats smooth and solid(compact), internal spongy, other area with red or yellow bone marrow
28
bones as organs
4 tissue types
29
bone markings
projections, depressions, and openings indicate stress from tendons, ligaments and muscle serve as conduits
30
projections that attach to muscle
outward growths, bulges
31
tuberosity
large rounded projections and can be roughened. rough surface. (seated ischial tuberosity- pressure point develop decubitous ulcer)
32
tubercle
small rounded projection or a process.
33
crest
narrow ridge of bone (usually prominent)
34
line
narrow ridge of bone (less prominent than a crest)
35
epicondyle
raised area on or above a condyle.
36
trochanter
very large, blunt, irregularly shaped process (the only examples are on the femur)
37
spine
sharp, slender, often pointed, projection
38
process
any bony prominence
39
projections that form joints
head, condyle, ramus, and facet
40
head
bony expansion carried on a narrow neck
41
condyle
rounded articular projection
42
ramus
arm-like bar of bone
43
facet
smooth or nearly flat articular surface
44
osteology
study of bone. bone is a connective tissue with a hard matrix, mineralization (calcification)- process of hardening. other tissue present in bone; blood, bone marrow, cartilage, adipose tissue, nervous tissue, fibrous connective tissue
45
depressions
contain certain structures
46
fossa (skull- anterior/middle/ posterior)
shallow basin like depressions in a bone
47
groove
furrow passage for blood vessels
48
openings
allow for passage of nerve and blood vessels
49
meatus
canal like passageway (ie:acoustic meatus)
50
fissure
narrow, slit like opening
51
foramen
round or oval opening through a bone
52
notch
indentation at the edge of a structure
53
sinus
a cavity within a bone (inside has been riddled out and its filled with air and lined with mucous membrane)
54
compact and spongy bone
bone textures. every bone has an outter/inner layer
55
compact bone
external
56
spongy bone
internal- honeycomb or flat needle like pieces called trabeculae
57
trabeculae
tiny bone struts- help bone resist stress
58
long bone structure
compact and spongy bone tissue, 2 epiphyses (heads) at ends of diaphysis (shaft), marrow (medullary) cavity. epiphyseal line- remnant of growth plate. periosteum covering nutrient foramina. endosteum lining. articular cartilage- smooths joints
59
diaphysis
shaft- forms long access of bone
60
medullary cavity
constructed of thick layers of compact bone that surrounds central medullary cavity. yellow marrow cavity contains fat
61
epiphysis
bone ends are formed of compact and spongy bone- joint surface covered by thin layer of articular or hyaline cartilage
62
hematopoietic tissue
red bone marrow found within trabecular cavities of spongy bone and also diploe (center) of flat bones, more active because they have less fat containing cavities (use those bones for samples)
63
epiphyseal line (metaphysis)
between diaphysis and epiphysis. remnant of growth "epiphysial" plate.
64
epiphysial plate
found in children up until growth ends. disc of hyaline cartilage that grows during childhood to lengthen bone
65
membranes
coverings
66
periosteum
glistening white, double layered membrane that covers entire external surface of long bones except for joint surfaces because there we have hyaline cartilage
67
fibrous layer
outter layer of dense irregular connective tissue
68
osteogenic layer
2nd layer, inner layer consists of osteo blasts " bone germinators"
69
osteogenic (osteoprogenitor) cells
stem cells
70
endosteum
inner periosteum, central canals. delicate connective tissue membrane that covers the internal bone surface, covers trabeculae of spongy bone and lines the canals
71
osteoblasts
bone forming cells
72
osteocytes
mature bone cells
73
osteoclasts
bone dissolving macrophages
74
perforating fibers (sharpays fibers)
help secure periosteum to bone, tuffs of collagen which extend from fibrous layer of periosteum to bone matrix
75
nutrient foramen
tiny openings in periosteum that supply nerve fibers, blood vessels, lymphatic vessels to the diaphysis of bone
76
short/flat/irregular bone structure
no shaft, no epiphysis. active marrows (used for biopsies) sternum or coxal bones
77
diploe (sandwich)
layer compact bone and center spongy bone
78
microscopic anatomy of bones
bone cells- osteoblasts, osteocytes, osteoclasts, and osteogenic cells
79
compact bone
looks dense but contains passageway for nerves and vessels; adapted to support weight and tension stress
80
osteon
basic unit- concentric lamellae, central (haversion) canal. haversian system- structural unit of compact bone
81
lamellae
little plates, hollow tubes of bone matrix found surrounding the central canal
82
central canal (haversion canal)
runs through the core of each osteon and its going to contain blood vessels and nerve fibers
83
perforating canals (volkmanns canal)
found lying at right angles to long axis of bone, they connect the blood and the nerve supply of the periosteum to those in the central canal and medullary cavity
84
lacunae
little hollow spaces found at the junctions of the lamellae "occupied by osteocytes"
85
canaliculi
little hair like canals which connect lacunae to each other and to the central canal
86
interstitial lamellae
lamellae that fill the gaps in between the osteons
87
circumferential lamellae
deep to the periosteum and superficial to the end osteon and they're spanning the entire diaphysis and they resist long bone twisting
88
chemical composition of bones
balance of 2 major components (organic & inorganic) that keep bones strong and durable
89
organic component
1/3 collagen and large protein-carbohydrate complexes osteoid cells. organic part of matrix includes ground substance and collagen fibers
90
inorganic components
2/3, 85% hydroxyapatite (crystalized calcium phosphate salt) 10% calcium carbonate, 5% other inorganic minerals.