A 73-year-old client is complaining of issues with regulation of motor movements of the pharynx and lack of sensation of the tongue. What cranial nerve regulates motor movements of the pharynx and sensations of the tongue?

GENERAL PHYSIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Cranial Nerve V
B	Cranial Nerve VII
C	Cranial Nerve IX
D	Cranial Nerve XII

Explanation:

Detailed explanation-1: -The glossopharyngeal nerve is the 9th cranial nerve (CN IX). It is one of the four cranial nerves that has sensory, motor, and parasympathetic functions. It originates from the medulla oblongata and terminates in the pharynx.

Detailed explanation-2: -The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). It is mainly an efferent nerve for the tongue musculature. The nerve originates from the medulla and travels caudally and dorsally to the tongue.

Detailed explanation-3: -The glossopharyngeal nerve (CN IX) supplies organs, muscles and other structures in your mouth and throat. It helps you taste food and sense pain in your throat.

Detailed explanation-4: -Glossopharyngeal nerve lesions produce difficulty swallowing; impairment of taste over the posterior one-third of the tongue and palate; impaired sensation over the posterior one-third of the tongue, palate, and pharynx; an absent gag reflex; and dysfunction of the parotid gland.

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