[TA] the inferior, more significant, of two sensory ganglions on the glossopharyngeal nerve immediately inferior to its exit from the jugular foramen. The unipolar neurons comprising the ganglia convey taste and general sensation from the posterior third of the tongue, but only general sensation from the fauces, soft palate, and oropharynx. SYN: ganglion inferius nervi glossopharyngei [TA], Andersch ganglion, extracranial ganglia, ganglion extracraniale, petrosal ganglion, petrous ganglion.