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 these choices are correct.

Question

Quizplus · Accepted Answer

All of these choices are correct. The accessory nerve has both a cranial and a spinal component. It joins the vagus nerve and provides innervation to the trapezius and sternocleidomastoid muscles. It is cranial nerve XI.

The Accessory Nerve