In CN IX role, which statement is true?

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Multiple Choice

In CN IX role, which statement is true?

Explanation:
Glossopharyngeal nerve carries taste from the posterior third of the tongue, motor to the stylopharyngeus muscle, and parasympathetic fibers to the parotid gland. This combination is exactly what the statement describes, so it’s true. Taste from the anterior two-thirds is handled by the facial nerve (via chorda tympani), motor to the face is by the facial nerve, and hearing involves the vestibulocochlear nerve. So the correct concept is that CN IX provides posterior tongue taste, stylopharyngeus motor, and parotid parasympathetic innervation.

Glossopharyngeal nerve carries taste from the posterior third of the tongue, motor to the stylopharyngeus muscle, and parasympathetic fibers to the parotid gland. This combination is exactly what the statement describes, so it’s true. Taste from the anterior two-thirds is handled by the facial nerve (via chorda tympani), motor to the face is by the facial nerve, and hearing involves the vestibulocochlear nerve. So the correct concept is that CN IX provides posterior tongue taste, stylopharyngeus motor, and parotid parasympathetic innervation.

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