Week 1 - Cranial Nerves

Question 1

CN I - olfactory

Answer 1

sVA only, cell body in olfactory epithelium, through cribriform plate in ethmoid, supplies olfactory epithelium

Question 2

CN II - optic

Answer 2

sSA only, cell body in ganglionic layer of retina, from orbit –> optic nerve –> optic chiasm –> optic tract, supplies retina

Question 3

CN IV - trochlear

Answer 3

gSE only, cell body in trochlear nucleus, passes through superior orbital fissure, supplies superior oblique

Question 4

CN V - trigeminal sVE

Answer 4

cell body in trigeminal motor nucleus, passes through foramen ovale (V3), supplies muscles of mastication, mylohyoid, ant. digastric

Question 5

CN V - trigeminal gSA

Answer 5

cell body trigeminal ganglion, V1 passes through superior orbital fissure, V2 passes through foramen rotundum, V3 passes through foramen ovale, supplies face, nose, mouth, supratentorial dura

Question 6

CN V - trigeminal gSA

Answer 6

cell body in mesencephalic nucleus, travels with V1/V2/V3, proprioception of head, TMJ, and tooth sockets

Question 7

CN VII - facial sVE

Answer 7

cell body in facial motor nucleus, passes through internal acoustic meatus and stylomastoid foramen, supplies muscles of facial expression, stylohyoid, post. didgastric, stapedius

Question 8

CN VII - facial gVE

Answer 8

cell body in superior salivatory nucleus, greater petrosal to pterygopalatine ganglion and chorda tympani to submandibular ganglion, supplies glands of nose, sinuses, palate, lacrimal gland, sublingual glands, glands of oral cavity

Question 9

CN VII - facial sVA

Answer 9

cell body in geniculate ganglion, passes through internal auditory meatus to chorda tympani and greater petrosal nerve, supplies taste buds of ant 2/3 tongue and palate

Question 10

CN VII - facial gSA

Answer 10

cell body in geniculate ganglion, passes through nervous intermedius, supplies ext. auditory meatus and skin back of ear

Question 11

CN IX - glossopharyngeal gVE

Answer 11

cell body in inferior salivatory nucleus, jugular foramen to otic ganglion, postganglionic fibers travel with auriculotemporal nerve to supply parotid gland