The Gag Reflex is Mediated by Which Nerve

Question

The gag reflex is mediated by which nerve?
A) Optic nerve
B) Oculomotor nerve
C) Cranial nerve VIII
D) Glossopharyngeal nerve

Accepted Answer

The glossopharyngeal nerve is the nerve responsible for the gag reflex. It is the ninth cranial nerve and it is responsible for sensory input from the tongue, pharynx, and tonsils, as well as motor control of the stylopharyngeus muscle.