What cranial nerve innervates every muscle of facial expression (except the levator palpebrae superioris)?
A)trigeminal nerve (CN V)
B)facial nerve (CN VII)
C)vagus nerve (CN X)
D)spinal accessory nerve (CN XI)

Question

Quizplus · Accepted Answer

The facial nerve (CN VII) innervates every muscle of facial expression except for the levator palpebrae superioris, which is innervated by the oculomotor nerve (CN III). Option A, the trigeminal nerve (CN V), innervates the muscles of mastication. Option C, the vagus nerve (CN X), innervates muscles of the pharynx and larynx. Option D, the spinal accessory nerve (CN XI), innervates the sternocleidomastoid and trapezius muscles.

What Cranial Nerve Innervates Every Muscle of Facial Expression (Except