CN IV: Trochlear Nerve

Question 1

Trochlear Nerve

Answer 1

“control of superior oblique m. of the eye”

• the smallest cranial nerve
• The only one that exits from the dorsal aspect of the brain stem, and has the longest intracranial course of any of the CN.

Question 2

Trochlear Nerve related to eye movement

Answer 2

-responsible for moving the eye down and outwards.

Question 3

clinically, damage to the trochlear nerve will produce …..

Answer 3

an inability to look down and outward and can also produce diplopia (double vision).