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Anatomy II > Cranial Cavity > Flashcards

Cranial Cavity Flashcards

1
Q

middle meningeal artery entry, branching, supplies

A

foramen spinosum, parietal and frontal. supplies dura

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2
Q

anterior cerebral artery supplies

A

cerebral hemispheres, except occipital lobes

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3
Q

middle artery supplies

A

most of the lateral surfaces of brain hemispheres

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4
Q

vertebral artery supplies

A

cranial meninges and cerebellum

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5
Q

basilar artery supplies

A

brainstem, cerebellum and cerebrum

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6
Q

posterior cerebral artery supplies

A

internal aspect of central hemisphere, occipital lobe

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7
Q

posterior communicating supplies

A

optic tract, cerebral peduncle, internal capsule and thymus

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8
Q

what drains into superior sagittal sinuses

A

superior cerebral veins

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9
Q

inferior sagittal sinus drains into

A

straight sinus

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10
Q

what drains into cavernous sinus

A

superior and inferior opthalmic veins, superficial middle cerebral vein, sphenoparietal sinus

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11
Q

superior petrosal joins ____ to form sigmoid sinus

A

transverse sinus

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12
Q

on dorsum sella at posterior end of cavernous sinus, drains directly into origin of IJV

A

inferior petrosal sinus

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13
Q

runs along cerebellar tentorum, becomes sigmoid sinus

A

transverse sinus

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14
Q

from transverse to IJV

A

sigmoid sinus

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15
Q

in attached border of falx cerebelli, ends at confluence of sinuses

A

occipital sinus

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16
Q

cerebral falx

A

attached to crysta galli, separates right and left hemispheres

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17
Q

cerebellar falx

A

vertical infolding inferior to cerebellar tentorum, separates cerebellar hemispheres

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18
Q

diaphragm sella

A

covers pituitary, has passage for infundibulum

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19
Q

epidural space

A

between cranium and external periosteal layer of dura. Not a real space.

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20
Q

epidural hemorage

A

middle menigeal nerve

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21
Q

subdural space

A

between dura and arachnoid. venous bleeds, not a real space

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22
Q

subarachnoid space

A

between arachnoid and pia. A REAL SPACE!

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23
Q

CSF is in

A

the subarachnoid space. Choriod makes it, arachnoid granules absorb it

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24
Q

Hydrocephalus

A

CSF overproduction, flow obstruction, or absorption failure. Enlargement of head, dilation of ventricles, thinning of brain

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25
Q

cavernous sinuses drain to ____ sinuses & the ______ venous plexus via emissary veins

A

superior and inferior petrosal, pterygoid venous plexus. cavernous sinus FACE INFECTION!

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26
Q

who passes through the cavernous sinus to get to the superior orbital fissure?

A

CN III, IV, & V1

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27
Q

lymphatics in the cavernous sinus region

A

there aren’t any!

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28
Q

internal carotid U turn

A

as cavernous part becomes cerebral part at carotid canal

29
Q

blood supply to orbit

A

opthalmic, from internal carotid

30
Q

orbit drainage

A

s. and i. opthalmic veins, drain through superior orbital fissure to cavernous sinus

31
Q

lymphatics in the eyeball

32
Q

Horner’s Syndrome

A

No sympathetics to the eye: ptosis, miosis, anhydrosis, flushed skin

33
Q

smooth muscles in the eye

A

ciliary, sphincter pupillae, dilator pupillae

34
Q

ciliary muscle

A

changes shape of lens to allow focusing (parasym)

35
Q

sphincter pupillar

A

makes pupil smaller (parasym)

36
Q

dilator pupillar

A

makes pupil large (sym)

37
Q

ADduct and look up

A

inferior oblique is okay

38
Q

ADduct and look down

A

superior oblique is okay (IV)

39
Q

ABduct and look up

A

superior rectus is okay

40
Q

ABduct and look down

A

inferior rectus is okay

41
Q

nasolacrimal duct

A

from lacrimal sac, opens to anterior part of inferior nasal meatus

42
Q

inferior nasal meatus

A

a horizantal passage inferolateral to nasal concha

43
Q

concha in the nose are named for

A

meatus below them (3)

44
Q

paralysis of geniohyoid

A

tongue shifts posteriorly, can choke you during anesthesia

45
Q

to anesthetize teeth (mandibular block)

A

pterygomandibular raphe, through superior constrictor deposit in inferior alveolar

46
Q

pterygomandibular raphe

A

Its medial surface is covered by the mucous membrane of the mouth.
Its lateral surface is separated from the ramus of the mandible by a quantity of adipose tissue.
Its posterior border gives attachment to the superior pharyngeal constrictor muscle.
Its anterior border attaches to the posterior edge of the buccinator.

47
Q

cricothyroid joints important for

A

changes in length of vocal cords

48
Q

extrinsic muscles of the larynx

A

act on voicebox as a whole by depressing or elevating: infrahyoids (down) suprahyoids up

49
Q

intrinsic muscles of the larynx

A

confined to larynx, modify size of glottal slit and chord tension.

50
Q

which hyoid does larynx only?

A

thyrohyoid

51
Q

tympanic membrane separates

A

external and middle ear

52
Q

filled with auditory ossicles, stapedius and tensor tympani muscles, and tympanic plexus, and chorda tympanii nerve

A

middle ear

53
Q

pharynongotympanic tube connects

A

middle ear to nasopharynx

54
Q

what muscles pop the ear?

A

levator and tensor veli palatini

55
Q

where is the vestibulocochlear organ?

56
Q

malleus, incus and stapes job

A

transmit sound to cochlea (fluid filled labyrinth)

57
Q

mastoid antrum

A

cavity in mastoid process: receives sound, provide voice resonance, and keep you from hearing yourself chew

58
Q

tensor tympani attaches to

59
Q

branches of the intermediate nerve (VII)

A

greater petrosal & chorda tympani

60
Q

what exits foramen cecum?

A

emissary to superior sagittal sinus

61
Q

what artery exits the optic canal?

A

opthalmic artery!

62
Q

opthalmic nerve and vein exit where?

A

superior orbital fissure

63
Q

what artery enters the foramen ovale?

A

accessory meningeal

64
Q

what enters foramen spinosum?

A

middle meningeal artery and vein, menigeal branch of mandibular nerve

65
Q

what enters foramen lacerum?

A

internal carotid artery and nerve plexus

66
Q

where do greater and lesser petrosal nerve exit

A

greater and lesser petrosal foramen (between spinosum and IAM)

67
Q

what’s in the jugular foramen with CN IX, X, XI?

A

inferior petrosal sinus, sigmoid sinus, posterior meningeal arter

68
Q

what’s in the condylar canal?

A 
medulla oblongata
meninges
vertebral arteries
menigeal branches of vertebral arteries
spinal roots of accessory nerves

Anatomy II (8 decks)

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