Cranial Nerves

Question 0

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

Answer 0

edinger westphal nucleus

Question 1

where does the occulomotor nerve arise?

Answer 1

occulomotor nucleus

Question 2

where does the occulomotor nerve exit the brain?

Answer 2

stylomastoid foramen

Question 3

what is innervated by the superior division?

Answer 3

Levator Palpebrae Superioris

Superior Rectus muscle

Question 4

what does the inferior division innervate?

Answer 4

inferior oblique
inferior rectus
medial rectus

Question 5

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

Answer 5

ciliary ganglion

Question 6

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

Answer 6

short ciliary nerve

Question 7

what are the anatomical landmarks associated with CN III?

Answer 7

cavernous sinus
uncus
teritorial notch

Question 8

what area of the brain does the occulomotor nerve arise?

Answer 8

midbrain

Question 9

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

Answer 9

midbrain
pons
medulla

Question 10

what are the 3 branches of the trigeminal nerve?

Answer 10

Vi - opthalmic
Vii - maxillary
Viii - mandibular

Question 11

what route does the Vi exit the skull?

Answer 11

superior orbital fissure

Question 12

what route does the Vii exit the skull?

Answer 12

foramen rotundum

Question 13

what route does Viii exit the skull?

Answer 13

foramen ovale

Question 14

what are the 3 branches of Vi?

Answer 14

frontal
nasocilary
lacrimal

Question 15

what does Vi supply?

Answer 15

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

Question 16

how many branches of Vii are there?

Answer 16

14

Question 17

what does Vii supply?

Answer 17

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

Question 18

what are the 4 branches of Viii? (sensory)

Answer 18

Buccal
Auriculotemporal
lingual
inferior alveolar

Question 19

what does Viii supply?

Answer 19

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

Question 20

what motor supply does Viii do?

Answer 20

muscles of masstication
tensor tympani
anterior digastric
levator veli palatini

Question 21

explain parasympathetics involving the trigeminal nerve

Answer 21

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

Question 22

what is the difference between buccal branch and buccal nerve?

Answer 22

buccal nerve arises from Viii

buccal branch arises from VII

Question 23

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

Answer 23

internal acoustic meatus

Question 24

what ganglion is formed after the facial nerve is formed?

Answer 24

geniculate ganglion

Question 25

what is the parasympathetics of the facial nerve?

Answer 25

greater petrosal nerve supplies glands | chorda tympani also carries some to submandibular ganglion and then they hitch hike along CN V

Question 26

what does the nerve to stapedius supply?

Answer 26

stapedius

Question 27

what does the chorda tympani do?

Answer 27

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

Question 28

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

Answer 28

the stylomastoid foramen

Question 29

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

Answer 29

posterior auricular nerve to (post) digastric nerve to stylohyoid

Question 30

what are the terminal branches of the facial nerve?

Answer 30

``` Temporal branch Zygomatic branch Buccal branch Marginal mandibular branch Cervical branch ```

Question 31

What does the posterior auricular nerve supply?

Answer 31

the muscles of the external ear

Question 32

what does the temporal branch supply?

Answer 32

frontalis, orbicularis occuli, corrugator supercilli

Question 33

what does the zygomatic branch supply?

Answer 33

orbicularis occuli

Question 34

what does the buccal branch supply?

Answer 34

buccinator, orbicularis oris, zygomaticus

Question 35

what does the marginal mandibular branch supply?

Answer 35

mentalis

Question 36

what does the cervical branch supply?

Answer 36

platysma

Question 37

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

Answer 37

facial canal