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Otic Ganglion (Left)
Nervous System

Otic Ganglion (Left)

Ganglion oticum

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Quick Facts

Location: The otic ganglion sits just inferior to the foramen ovale, close to the mandibular nerve.

Branches: The otic ganglion receives fibers from the lesser petrosal nerve and sends fibers out to the auriculotemporal nerve

Supply: Parasympathetic. The otic ganglion sends postganglionic parasympathetic fibers to the parotid gland.

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The otic ganglion is a collection of postganglionic neuronal cell bodies that sits just inferior and extracranially relative to the foramen ovale. It is in close proximity to the mandibular nerve trunk as it emerges from the foramen ovale. The otic ganglion develops from cranial neural crest cells.


The otic ganglion receives preganglionic parasympathetic fibers from the lesser petrosal nerve. These primarily come from the glossopharyngeal nerve, although small contributions from the facial nerve and vagus nerve have been noted. The postganglionic fibers leaving the otic ganglion join up with the auriculotemporal nerve.

Supplied Structures

The fibers of the otic ganglion target the parotid gland.

Learn more about this topic from other Elsevier products

Otic Ganglion

ScienceDirect image

The otic ganglion is a small peripheral parasympathetic ganglion residing immediately below the foramen ovale.

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