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BB1 > skull > Flashcards

skull Flashcards

1
Q

how many bones in skull

A

22

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2
Q

what types of joint are in the skull

A

fibrous + synovial temporomandibular

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3
Q

neurocranium function

A

protect the brain, attachment sites for head and neck muscles

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4
Q

viscerocranium function

A 
framework of face
cavities for special sense organs
opening for air and food passage
secures the teeth
attachment for FM of expression
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5
Q

3 sutures of skull

A

coronal, sagittal and lambdoid

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6
Q

pterion

A

weakest and thinnest point of the skill. Is where the frontal, sphenoid, zygomatic, and temporal bone meet

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7
Q

outside part of temporal

A

squamous

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8
Q

internal part of temporal

A

petrous

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9
Q

processes on temporal bone

A

zygomatic process
mastoid process
styloid process

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10
Q

attachment point on skull for sternocleidomastoid

A

mastoid process on temporal bone

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11
Q

where is the external acoustic meatus

A

Between zygomatic process and mastoid process on temporal bone

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12
Q

what bone attaches the neurocranium and viscerocranium

A

sphenoid

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13
Q

what descends from the sphenoid bone

A

pterygoid plates

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14
Q

what does the pterygoid muscle attach to

A

pterygoid plates on sphenoid bone

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15
Q

sella turcica

A

depression in the sphenoid bone inferiorly, contains the pituitary gland

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16
Q

boundaries of sphenoidal sinus

A

Anterior boundary: bony eminences anterior clinoid processes
Posterior boundary: bony tubercles posterior clinoid processes.

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17
Q

attachment sites for dura mater

A

clinoid processes

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18
Q

meninges layer

A

Dura mater, arachnoid mater and pia mater

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19
Q

layers of dura mater

A

periosteal and meningeal

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20
Q

Falx cerebri

A

fold of dura mater that descends vertically in the longitudinal fissure between the two hemispheres

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21
Q

Tentorium Cerebelli

A

fold of dura mater that separates the cerebellum from the occipital lobes

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22
Q

Tentorial notch

A

anterior opening at the borders of the tentorium cerebelli and partially the falx cerebri

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23
Q

dural venous sinus

A

endothelium lined spaces filled with venous blood between the periosteal and meningeal layers of the dura mater

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24
Q

what do the transverse and sigmoid sinuses each drain into

A

transverse into sigmoid

sigmoid into jugular foramen

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25
Q

name the dural venous sinuses

A 
cavernous
petrosal
straight
transverse
sigmoid
superior sagittal
inferior sagittal
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26
Q

what runs along the free margin of the falx cerebri

A

inferior sagittal sinus

27
Q

what connects the superior and inferior sagittal sinuses

A

straight sinus

28
Q

what artery runs through the cavernous sinus

A

internal carotid artery

29
Q

what does the cavernous sinus drain into

A

petrosal sinus

30
Q

orbit

A

bilateral pyramidal shaped cavity in the anterior aspect of skull

31
Q

what bones make up the oral cavity

A

mandible
maxilla
palatine

32
Q

what makes up the nasal septum

A

ethmoid bone (superiorly), septal cartilage, vomer (inferiorly

33
Q

are the superior, middle, and inferior conchae extensions of the ethmoid bone

A

superior and middle yes

inferior is separate bone

34
Q

Paranasal Sinuses

A

hollow spaces within the frontal, sphenoid, ethmoid and maxillary bones. Lined by mucous membrane, drains into nose

35
Q

large membranous regions between the bones in fetal skull

A

fontanelles

36
Q

fontanelles function

A

Allow for growth of the brain and flexibility during birth

37
Q

fontanelles in fetal skull

A

anterior
posterior
sphenoid
mastoid

38
Q

largest fontanelle in fetal skull

A

anterior fontanelle

39
Q

bones of anterior cranial fossa

A

frontal
ethmoid
sphenoid

40
Q

bones of middle cranial fossa

A

sphenoid
temporal
parietal

41
Q

bones of posterior cranial fossa

A

sphenoid
parietal
temporal
occipital

42
Q

lobes of anterior cranial fossa

43
Q

lobes of middle cranial fossa

44
Q

lobes of anterior cranial fossa

A

cerebellum

45
Q

what runs through foramen spinosum

A

middle meningeal artery

46
Q

what does the middle meningeal artery supply and where does it run

A

meninges

between skull and dura mater

47
Q

what goes through jugular foramen

A

internal jugular vein

48
Q

what angle does the carotid artery run through the carotid canal

49
Q

olfactory nerve route

A

inferiorly from olfactory bulb, through the cribriform plate of the ethmoid bone to enter the nasal cavity

50
Q

optic nerve route

A

enters the optic canal: to orbit

51
Q

Oculomotor route

A

emerges from midbrain. Passes through superior orbital fissure

52
Q

Trochlear route

A

From posterior surface of midbrain. Through superior orbital fissure

53
Q

Trigeminal route

A

From lateral surface of pons. then branches

54
Q

Ophthalmic v3 route

A

Passes through superior orbital fissure. Reaches the face by exiting through supraorbital foramen/fissure

55
Q

Maxillary (V2) route

A

passes through the foramen rotundum. Reaches the face by passing through the infraorbital foramen

56
Q

Mandibular (V3) route

A

passes through foramen ovale. To face via the mental foramen

57
Q

Abducens route

A

emerges from the pons. Passes through superior orbital fissure

58
Q

Facial route

A

Emerges from the pons, passes through the internal acoustic meatus. Runs through the petrous part of the temporal bone, passes out via the stylomastoid foramen

59
Q

Vestibulocochlear route

A

Emerges from pons, passes through internal acoustic meatus

60
Q

Glossopharyngeal route

A

Lateral surface of medulla oblongata, exits via jugular foramen

61
Q

vagus route

A

Lateral surface of medulla oblongata, exits via jugular foramen.

62
Q

Spinal Accessory route

A

Emerges from first 5-6 cervical segments, runs superiorly through foramen magnum, then leaves the skull via the jugular foramen

63
Q

Hypoglossal route

A

Emerges from the anterior aspect of the medulla oblongata and runs through hypoglossal canal

BB1 (9 decks)

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