A patient develops a tumor of a cranial nerve that leads to difficulty in speaking from a loss of tongue movement. Which cranial nerve is affected?
A) glossopharyngeal
B) hypoglossal
C) vagus
D) spinal accessory
E) trigeminal

Question

Quizplus · Accepted Answer

The hypoglossal nerve (CN XII) innervates the muscles of the tongue, and its damage can lead to difficulty in speech due to the loss of tongue movement. The glossopharyngeal nerve (CN IX), vagus nerve (CN X), spinal accessory nerve (CN XI), and trigeminal nerve (CN V) do not innervate the muscles of the tongue.

A Patient Develops a Tumor of a Cranial Nerve That