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Head And Neck > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

0
Q

where does the parasympathetic supply associated with the occulomotor nerve arise?

A

edinger westphal nucleus

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1
Q

where does the occulomotor nerve arise?

A

occulomotor nucleus

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2
Q

where does the occulomotor nerve exit the brain?

A

stylomastoid foramen

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3
Q

what is innervated by the superior division?

A

Levator Palpebrae Superioris

Superior Rectus muscle

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4
Q

what does the inferior division innervate?

A

inferior oblique
inferior rectus
medial rectus

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5
Q

what is the PS ganglion that the occulomotor nerve is associated with?

A

ciliary ganglion

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6
Q

by what route does the ciliary ganglion connect with the spinchter pupillae?

A

short ciliary nerve

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7
Q

what are the anatomical landmarks associated with CN III?

A

cavernous sinus
uncus
teritorial notch

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8
Q

what area of the brain does the occulomotor nerve arise?

A

midbrain

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9
Q

what 3 areas of the brain does the sensory branch of the trigeminal nerve arise from?

A

midbrain
pons
medulla

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10
Q

what are the 3 branches of the trigeminal nerve?

A

Vi - opthalmic
Vii - maxillary
Viii - mandibular

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11
Q

what route does the Vi exit the skull?

A

superior orbital fissure

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12
Q

what route does the Vii exit the skull?

A

foramen rotundum

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13
Q

what route does Viii exit the skull?

A

foramen ovale

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14
Q

what are the 3 branches of Vi?

A

frontal
nasocilary
lacrimal

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15
Q

what does Vi supply?

A 
cornea
conjunctiva and skin of upper eyelid
dorsum of nose
frontal and ethmoid sinus
forehead and scalp
16
Q

how many branches of Vii are there?

A

14

17
Q

what does Vii supply?

A 
lower eyelid and conjunctiva
cheeks
maxillary sinus
palatine superior
upper teeth 
lateral nose and nasal cavity 
upper lip
18
Q

what are the 4 branches of Viii? (sensory)

A

Buccal
Auriculotemporal
lingual
inferior alveolar

19
Q

what does Viii supply?

A 
chin
lower teeth
anterior 2/3 tongue (general)
lower lip 
external ear 
mucous membranes of oral cavity
20
Q

what motor supply does Viii do?

A

muscles of masstication
tensor tympani
anterior digastric
levator veli palatini

21
Q

explain parasympathetics involving the trigeminal nerve

A

does not have any, but some HITCH HIKE on the nerve
pterygopalatine ganglion -> V2 -> V1 -> lacrimal gland
-> nasal mucosa
submandibular ganglion -> V3 -> submandibular and sublingual glands

22
Q

what is the difference between buccal branch and buccal nerve?

A

buccal nerve arises from Viii

buccal branch arises from VII

23
Q

after which structure do the sensory and motor branches of the CN VII meet to form the facial nerve?

A

internal acoustic meatus

24
Q

what ganglion is formed after the facial nerve is formed?

A

geniculate ganglion

25
Q

what is the parasympathetics of the facial nerve?

A

greater petrosal nerve supplies glands

chorda tympani also carries some to submandibular ganglion and then they hitch hike along CN V

26
Q

what does the nerve to stapedius supply?

A

stapedius

27
Q

what does the chorda tympani do?

A

provides special sensory innervation to the anterior 2/3 of tongue

28
Q

what structure does the facial nerve exit after the chorda tympani branches off?

A

the stylomastoid foramen

29
Q

what 3 nerves are given off before the facial nerve enters the parotid but after it exits the stylomastoid foramen

A

posterior auricular
nerve to (post) digastric
nerve to stylohyoid

30
Q

what are the terminal branches of the facial nerve?

A 
Temporal branch
Zygomatic branch
Buccal branch
Marginal mandibular branch
Cervical branch
31
Q

What does the posterior auricular nerve supply?

A

the muscles of the external ear

32
Q

what does the temporal branch supply?

A

frontalis, orbicularis occuli, corrugator supercilli

33
Q

what does the zygomatic branch supply?

A

orbicularis occuli

34
Q

what does the buccal branch supply?

A

buccinator, orbicularis oris, zygomaticus

35
Q

what does the marginal mandibular branch supply?

A

mentalis

36
Q

what does the cervical branch supply?

A

platysma

37
Q

after the internal acoustic meatus, what space does the facial nerve lie in?

A

facial canal

Head And Neck (10 decks)

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