Inferior ganglion of glossopharyngeal nerve

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Nerve: Inferior ganglion of glossopharyngeal nerve
Plan of upper portions of glossopharyngeal, vagus, and accessory nerves. (Petrous ganglion visible near center.)
Latin ganglion inferius nervi glossopharyngei, ganglion petrosum
Gray's p.98
From glossopharyngeal nerve

The inferior ganglion of the glossopharyngeal nerve (petrous ganglion) is larger than the superior ganglion and is situated in a depression in the lower border of the petrous portion of the temporal bone.

It contains the bodies of general somatic sensory neurons(GSA fibers) for innervation of the pharynx, tonsils, tongue, middle ear, auditory tube and the ear canal.

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This article incorporates text from a public domain edition of Gray's Anatomy.