The glossopharyngeal nerve [IX] carries GVA, GSA, SA, GVE, and BE fibers:
The GVA fibers provide sensory input from the carotid body and sinus.
The GSA fibers provide sensory input from the posterior one-third of the tongue, palatine tonsils, oropharynx, and mucosa of the middle ear, pharyngotympanic tube, and mastoid air cells.
The SA fibers are for taste from the posterior one-third of the tongue.