Tympanic nerve

The tympanic nerve (Jacobson’s nerve) is a branch of the glossopharyngeal nerve found near the ear.

Tympanic nerve
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Plan of upper portions of glossopharyngeal, vagus, and accessory nerves. (Tympanic nerve visible in upper right)
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Tympanic nerve (labelled right side)
Details
Totympanic plexus
Identifiers
Latinnervus tympanicus
TA98A14.2.01.138
TA26323
FMA53480
Anatomical terms of neuroanatomy

PathEdit

It arises from the inferior ganglion of the glossopharyngeal nerve, and ascends to the tympanic cavity through a small canal, the inferior tympanic canaliculus, on the under surface of the petrous portion of the temporal bone on the ridge which separates the carotid canal from the jugular fossa.

In the tympanic cavity it divides into branches which form the tympanic plexus and are contained in grooves upon the surface of the promontory.

The tympanic nerve contains both sensory and parasympathetic axons:

Clinical significanceEdit

This nerve may be involved by paraganglioma, in this location referred to as glomus jugulare or glomus tympanicum tumours.

Additional imagesEdit

ReferencesEdit

This article incorporates text in the public domain from page 910 of the 20th edition of Gray's Anatomy (1918)

External linksEdit