Axial Bone Markings Flashcards

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1
Q

Supraorbital foramen

A

2 small holes above eyes

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2
Q

Glabella

A

Between eyebrows
Frontal bone

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3
Q

Foramen magnum

A

Big hole in orbital bone
Houses spinal cord

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4
Q

Occipital condyles

A

1 on each side of foramen magnum

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5
Q

What is a condyle

A

Place where one bone touches another

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6
Q

What is a foramen

A

A hole / opening

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7
Q

External occipital protuberance

A

Outside of occipital
Bump directly back of skull

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8
Q

Hypoglossal canal

A

Sides of foramen magnum
Cranial nerves pass through

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9
Q

External acoustic meatus

A

External hole of ear
Connects inner and outer ear

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10
Q

Styloid process

A

Temporal bone
Protrudes out of mastoid process

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11
Q

Mastoid process

A

Temporal bone
attachment site for many muscles

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12
Q

Jugular foramen

A

Part of temporal closest to occipital
Internal hole
Cranial nerves pass through

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13
Q

Greater and lesser wings

A

Sphenoid bone
Greater extends more
Lesser smaller

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14
Q

Sella turcica

A

Sphenoid bone
Where pituitary gland sits

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15
Q

Crista Gali

A

Ethmoid bone
Part that sticks up

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16
Q

Ethmoid air cells

A

Holes
Olfactory nerves go through
So signals go from nose to brain

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17
Q

mandible

A

lower jaw

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18
Q

maxilla

A

upper jaw

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19
Q

zygomatic bones

A

cheek bones

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20
Q

nasal bones

A

bones in top of nose

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21
Q

lacrimal bones

A

bones in the inner eye
medial to eyes
by tear ducts

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22
Q

palatine bones

A

pallet of mouth

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23
Q

vomer

A

bone in skull that separates left and right nose

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24
Q

inferior nasal concha

A

one in each bottom of nose
swirls air into nostrils to warm it and extract o2

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25
Q

condylar process

A

back protrusion of mandible
articulates with the mandibular fossa of temporal bone

26
Q

coronoid process

A

frontal top protrusion of mandible

27
Q

ramus

A

of mandible
side of jaw line

28
Q

body of mandible

A

front of jawline
connects point of chin and ramus

29
Q

aveolar process

A

holes where teeth sit
in maxilla and mandible

30
Q

mental foramen

A

1 hole on each side of mandible just below teeth
allow nerves to pass through on each side of chin

31
Q

palatine process

A

of maxilla
forms most of hard plate

32
Q

temporal process

A

of zygomatic bones

33
Q

zygomatic process

A

of temporal bones

34
Q

lacrimal fossa

A

holes in lacrimal bones for tear ducts

35
Q

hyoid bone

A

bone in front of trachea
protects trachea and is also attachment site for tongue

36
Q

greater and lesser horns

A

of hyoid bone
like greater and lesser wings of sphenoid

37
Q

mandibular fossa

A

on temporal bones
articulates with the condylar process of mandible

38
Q

mandibular symphasis

A

point of chin

39
Q

auditory ossicles

A

3 smallest bones in body
in ear

40
Q

fontanelles

A

fibrous membranes
connect baby bones in skull

41
Q

reason for fontanelles

A

so babies can get out of wombs

42
Q

sutural bones

A

little bones that form in between sutures
only some people have

43
Q

number of cervical bones

A

7

44
Q

atlas

A

c1

45
Q

axis

A

c2

46
Q

atlas vs axis

A

atlas has no body
axis has “dens” for atlas to rotate on

47
Q

number of thoracic vertebrae

A

12

48
Q

number of lumbar vertebrae

A

5

49
Q

body of vertebrae faces ____

A

anteriorly

50
Q

spinous process faces _____

A

posteriorly

51
Q

transverse processes

A

faces lateral
1 on each side

52
Q

vertebral foramen

A

holes in each vertebrae

53
Q

uniques of cervical vertebrae

A

triangle shaped foramen
smallest body
bifurcated spinous process
transverse process foramen

54
Q

uniques of thoracic vertebrae

A

sharp and downward pointed spinous processes
medium sized body

54
Q

uniques of lumbar vertebra

A

largest body

55
Q

parts of sternum

A

1.) mandibrium
2.) body
3.) xiphoid process

56
Q

Number of ribs

A

12 pairs
24 total

57
Q

true vs false ribs

A

1-7 = true
8-12 = false

11 & 12 = floating

58
Q

transverse costal facet

A

facet where ribs touch vertebrae

59
Q

which vertebrae has transverse costal facet

A

thoracic

60
Q

significance of vertebrae size

A

bigger supports more weight
smaller has more ROM