Which Cranial Nerve Innervates an Extrinsic Eye Muscle

Question

Which cranial nerve innervates an extrinsic eye muscle?
A)Accessory
B)Trochlear
C)Glossopharyngeal
D)Optic

Accepted Answer

The trochlear nerve (cranial nerve IV) innervates the superior oblique muscle, which is an extrinsic eye muscle.