Cranial Nerve Functions

Question 1

CN I, olfactory function

Answer 1

special sense smell

Question 2

CN II, optic function

Answer 2

special sense vision from neural retina to diencephalon & midbrain

Question 3

CN III, oculomotor superior ramus function

Answer 3

motor innervation to superior rectus and levator palpebrae superioris muscles

Question 4

CN III, oculomotor inferior ramus function

Answer 4

motor innervation to medial rectus, inferior rectus, and inferior oblique muscles
preganglionic parasympathetic innervation of ciliary ganglian via E-W nucleus, postganglionic parasympathetic innervation of ciliary body and constrictor muscle of iris

Question 5

CN IV, trochlear function

Answer 5

motor innervation of superior oblique muscle