The glossopharyngeal nerve
is the ninth of twelve cranial nerves
It receives sensory fibres from the posterior 2/3 of the tongue, the tonsils, the pharynx, the middle ear and the carotid body.
It supplies parasympathetic fibres to the parotid gland via the otic ganglion.
It also supplies motor fibres to stylopharngeus muscle and the upper pharyngeal muscles.