The nurse asks the patient to stick out their tongue while performing an assessment of the mouth and throat. The nurse knows this provides information about what cranial nerve?

A. XI: Cranial nerve XI, also known as the accessory nerve, is responsible for innervating the sternocleidomastoid and trapezius muscles, which are involved in shoulder and head movement. It does not play a role in tongue movement. B. V: Cranial nerve V, the trigeminal nerve, is responsible for sensation in the face and motor functions such as biting and chewing. While it is important for overall oral sensation, it does not control tongue movement. C. XII: Cranial nerve XII, the hypoglossal nerve, is responsible for motor control of the tongue muscles. When the patient sticks out their tongue, the nurse can assess the function of this nerve by observing the tongue's position, movement, and any signs of weakness or atrophy, which can indicate nerve damage. D. VII: Cranial nerve VII, the facial nerve, is responsible for the muscles of facial expression and taste sensations from the anterior two-thirds of the tongue. Although it contributes to some oral functions, it is not directly involved in the movement of the tongue itself.