The accessory nerve
A) has fibers that join the vagus nerve.
B) has both a cranial and a spinal component.
C) provides innervation to the trapezius and sternocleidomastoid muscles.
D) is cranial nerve XI.
E) All of the choices are correct.

Question

Quizplus · Accepted Answer

The accessory nerve indeed has fibers that join the vagus nerve, has both a cranial and a spinal component, provides innervation to the trapezius and sternocleidomastoid muscles, and is identified as cranial nerve XI.

The Accessory Nerve