CN III

Question 1

CN III - ______

Answer 1

oculomotor nerve

Question 2

is CN III sympathetic or parasympathetic

Answer 2

parasympathetic

Question 3

GSE function

Answer 3

raises upper eyelid, up/downward eyeball and medially

Question 4

GVE function

Answer 4

pupillary constriction and accomodation

Question 5

CN III leaves via _____

Answer 5

sup orbital fissure

Question 6

oculomotor nerve supplies all EOMs except _____

Answer 6

SO and LR

Question 7

superior division of eye muscles

Answer 7

SR and levator palpebrae superioris

Question 8

inferior division of eye muscles

Answer 8

MR, IR, IO and preganglionic PSY fibers to pupillary constrictor muscles and ciliary muscles

Question 9

what are the 2 motor nuclei

Answer 9

main motor and EDW nucleus

Question 10

parasympathetic nuc of CN III

Answer 10

EDW

Question 11

supply all extrinsic eye muscles except superior oblique and lateral rectus

Answer 11

main oculomotor nucleus

Question 12

main oculomotor nucleus receives _____ from B cerebral hemisphere

Answer 12

corticonuclear fibers

Question 13

main oculomotor nucleus receives _____ sup coll

Answer 13

tectobulbar fibers

Question 14

______ connects main oculomotor nuc to CN IV, VI and VIII

Answer 14

MLF

Question 15

main motor nuc is at the level of

Answer 15

level of superior colliculus

Question 16

EDW receives ______ for accommodation reflex

Answer 16

corticonuclear fibers

Question 17

EDW receives ______ for direct and consensual reflex

Answer 17

pretectal nucleus

Question 18

discuss oculomotor nerve course

Answer 18

from ant midbrain - bet PCA and SCA - middle cranial fossa - lateral wall of cavernous sinus - sup and inf ramus - sup orbital fissure