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ARCL228 > Intro to Skel > Flashcards

Intro to Skel Flashcards

1
Q

adult bones

A

206

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2
Q

adult teeth

A

32

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3
Q

func of bones

A
  • form skel
  • movement
  • protection
  • mineral storage
  • bone marrow
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4
Q

bone fibre shape

A

matrix

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5
Q

bone struct

A

90% collagen (org)
10% hydroxyapatite (calcium phosphate)
light but heavy duty

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6
Q

func of hydroxyapatite

A

rigidity and struct

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7
Q

func of collagen

A

flexibility

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8
Q

gross anatomy

A

seeable w naked eye

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9
Q

periosteum

A

tough vascular membrane covering outside of living bone

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10
Q

endosteum

A

cellular membrane lining inside of living bone

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11
Q

medullary cavity

A

hollow space in long bones where yellow marrow is

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12
Q

compact/cortical bone

A

smooth and dense
external and lining medullary cavity

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13
Q

subchondral bone

A

under cartilage/joint

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14
Q

spongy/trabecullar/cancellous bone

A
  • ident to cortical bone molecularly
  • more porous
  • inside bones
  • provide lightweight support
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15
Q

osteoporosis

A

thinning of trabeculae that form spongy bone

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16
Q

diaphysis

A

primary centre of ossification

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17
Q

epiphysises

A

secondary centres of ossification
- made of subchondral bone

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18
Q

metaphysises

A

areas that widen to accommodate growing epiphysises

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19
Q

where is red marrow located?

A

in spongy bone

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20
Q

epiphyseal line

A

there epiphysis and metaphysis join

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21
Q

parietals

A

upper/side skull

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22
Q

temporals

A

side, just above ear

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23
Q

zygomatics

A

cheekbone

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24
Q

nasal conchae

A

inside skull in nose

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25
Q

palatines

A

back of upper palate

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26
Q

lacrimals

A

inside of eye socket, middle back

27
Q

maxillae

A

upper jaw/upper palate

28
Q

3 ear bones from external to internal

A

malleus
incuse
stapes

29
Q

occipital

A

back/bottom

30
Q

frontal

A

forehead

31
Q

sphenoid

A

butterfly behind eyes at temple

32
Q

vomer

A

separates nasal cavity

33
Q

ramus

A

vertical part of jaw, connects w skull at mandibular condyle

34
Q

body (jaw)

A

horizontal part

35
Q

mental foramen

A

for blood vessels and jaw

36
Q

coronal suture

A

top of head, left to right

37
Q

saggital suture

A

front to back, coronal to lambdoidal

38
Q

lambdoidal suture

A

triangle at back of head

39
Q

occipital condyle

A

connector to 1st cervical vertebra

40
Q

petrous bone

A

pyramid, bony outside of ear canal

41
Q

mandible

A

lower jaw

42
Q

cranium

A

skull w/o mandible

43
Q

calveria

A

cranium w/o face

44
Q

calotte

A

calveria wo the base (just cap)

45
Q

splanchnocranium

A

face only

46
Q

number of skull parts at birth

A

45

47
Q

fontanelle

A

membrane btwn sep plates of baby skulls

48
Q

metopic suture

A

frontal, disappears into adulthood (50s)

49
Q

meningeal grooves

A

for soft tissues

50
Q

hyoid

A

u shaped
above esophagus
for tongue and thyroid
breaks w strangulation

51
Q

wormian bones

A

atypical, in sutures, intramembranous ossification

52
Q

axial skel

A

spinal column, sternum, manubrium, ribs, ossa coxae

53
Q

number of spinal vertebrae

A

33

54
Q

regions and number of spinal vertebrae

A

7 cervical
12 thoraic
5 lumbar
sacrum
coccyx

55
Q

atlas

A

C1 that arts w skull

56
Q

C2 traits

A

has dips on both sides to art w atlas

57
Q

spinal discs

A

cartilage btwn the art facets of vertebrae

58
Q

spinus process

A

posterior spikes to protect spinal cord

59
Q

defining feature of C vertebrae

A

transverse foramen

60
Q

defining feature of T vertebrae

A

costal (rib) facets
looks like a giraffe

61
Q

defining feature of L vertebrae

A

square/rectangular spinus process

62
Q

which vertebrae do the sternum and manubrium art w

A

T1-T7

63
Q

why ribs 8-10 “false ribs”

A

not art w sternum, arts w cartilage that arts w sternum

64
Q

use which rib to indent

A

4

ARCL228 (7 decks)

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