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Nerve: Tympanic plexus
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View of the inner wall of the tympanum. (Grooves for tympanic plexus labeled at center.)
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Plan of the facial and intermediate nerves and their communication with other nerves. (Tympanic plexus labeled at center.)
Latin plexus tympanicus
Gray's subject #204 909
From caroticotympanic nerves, tympanic nerve

In the tympanic cavity, the tympanic nerve (a branch of CN IX) divides into branches which form the tympanic plexus. This plexus is located on the surface of the promontory .

This tympanic plexus gives off:

The branches of the tympanic cavity provide innervation to the mucosa of the middle ear. The lesser petrosal nerve provides autonomic parasympathetic fibers that eventually innervate the parotid gland.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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