| either of the ninth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the pharynx, the soft palate, and the parotid glands, and of sensory fibers that conduct impulses to the brain from the pharynx, the middle ear, and the posterior third of the tongue. |

glossopharyngeal nerve n.
Either of a pair of nerves that emerge from the medulla, supply sensation to the pharynx and the back third of tongue, and carry motor fibers to the stylopharyngeal muscle and parasympathetic fibers to the otic ganglion. Also called ninth cranial nerve.