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A&P Lab > Exercise 9 > Flashcards

Exercise 9 Flashcards

the axial skeleton THE SKULL!

1
Q

Three divisions of the axial skeleton

A

skull, vertebral column and thoracic cage

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2
Q

what does the division of axial skeleton do

A

form longitudinal axis of body, protects brain, spinal cord, the heart and lungs

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3
Q

what are the two divisions of the skull

A

cranium and facial

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4
Q

how many bones make up the cranium

A

8

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5
Q

how many bones make up the facial

A

14

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6
Q

what do the cranium bones do

A

protect the brain

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7
Q

what doe the facial bones do

A

support the eyes and provide attachment for facial muscles

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8
Q

how is the skull put together

A

by sutures

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9
Q

what are sutures

A

interlocking fibrous joints

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10
Q

what is the exception to the sutures and why

A

the mandible because it is connected by freely moving joints

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11
Q

name the 8 bones of the cranium

A

frontal, temporal, parietal, occipital, sphenoid and ethmoid

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12
Q

how many bones make up each

A

1 frontal, 2 parietals, 2 temporals, 1 occipital, sphenoid and ethmoid.

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13
Q

what is the supraorbital margin

A

thin margin of eye socket that lies beneath the eyebrows above eyes

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14
Q

the frontal bone

A

forms the forehead

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15
Q

parietal bone

A

form superior and lateral aspect of skull

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16
Q

temporal bone

A

form inferolateral part of skull and contribute to middle cranial fossa

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17
Q

Squamous part

A

inferior to squamous suture

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18
Q

describe squamous part

A

located on temporal bone. wide region above the zygomatic process

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19
Q

zygomatic process

A

bridge-like projection that articulate with zygomatic bone

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20
Q

describe zygomatic process

A

pointy thing coming out the ear to form the cheeks

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21
Q

mandibular fossa

A

inferior to zygomatic process. receive condylar process of mandible

22
Q

tympanic part

A

sorrounds the external ear opening

23
Q

external acoustic meatus

A

canal leading into midear and eardrum

24
Q

describe external meatus

A

inside your ear

25
Q

styloid process

A

needle like projection that serves as attachment point for ligaments and neck muscles

26
Q

describe styloid process

A

look like needle going into neck. Pointy thing coming out the external acoustic meatus

27
Q

petrous part

A

form a bony wedge between spehnoid and occipital bone

28
Q

juglar foramen

A

located where the petrous part joins the occipital bone

29
Q

describe juglar foramen

A

inside the brain. Lateral to faramen magnum (BIG HOLE)

30
Q

corotid canal

A

opening through which internal corotid artery pass into cranial cavity.

31
Q

describe corotid canal

A

above juglar foramen

32
Q

mastoid process

A

bump behind external acoustic meatus

33
Q

occipital bone

A

posterior aspect of skull

34
Q

foramen magnum

A

large opening; hole in base of occipital bone

35
Q

occipital condyle

A

bumpy rounded projection lateral to foramen magnum

36
Q

external occipital proruberance

A

midline prominence behind the foramen magnum

37
Q

superior nachal line

A

below and lateral to foramen magnum

38
Q

sphenoid bone

A

bat shaped described as the keystone bone of cranium

39
Q

pterygoid process

A

project below from greater wing

40
Q

superior orbital fissures

A

sits in orbits…..lateral to optic canal. opening in greater wing

41
Q

sella turcica

A

turkish saddle above body of the sphenoid bone

42
Q

optic canal

A

openings in the base in lesser wing

43
Q

ethmoid

A

anterior cranial fossa. form part of nasal septum and nasal cavity

44
Q

crista galli

A

big pointy rooster’s comb superior projection

45
Q

cribriform plate

A

lateral to crita galli and little holes on the plate is the cribriform faramina

46
Q

perpendicular plate

A

big pointy inferior projection

47
Q

name the sutures

A

sagittal suture, coronal suture, squamous suture and lambdoid

48
Q

what do all the sutures have in common

A

they are located where the parietal bones articulate with eachother

49
Q

what is the sagittal suture

A

connect the 2 parietal bones

50
Q

what is the coronal suture

A

connects frontal bone to two parietals

51
Q

what is the squamous suture

A

connect parietal bones to temporal bones

52
Q

what is the lambdoid suture

A

connect occipital with 2 parietal bone

A&P Lab (8 decks)

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