The accessory nerve (cranial nerve CN XI) contains fibers that assist the hypoglossal nerve (CN XII).

Name: The accessory nerve (cranial nerve CN XI) contains fibers that assist the hypoglossal nerve (CN XII).
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The accessory nerve (CN XI) does not assist the hypoglossal nerve (CN XII). The accessory nerve primarily innervates the trapezius and sternocleidomastoid muscles involved in head and shoulder movements.

The Accessory Nerve (Cranial Nerve CN XI) Contains Fibers That