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Encyclopedia > Tympanic plexus
Nerve: Tympanic plexus
View of the inner wall of the tympanum. (Grooves for tympanic plexus labeled at center.)
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
Dorlands/Elsevier p_24/12648546

In the tympanic cavity the tympanic nerve divides into branches which form the tympanic plexus and are contained in grooves upon the surface of the promontory. Image File history File links Gray788. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... Elseviers logo. ... The tympanic cavity is a small cavity surrounding the bones of the inner ear. ... The tympanic nerve (nerve of Jacobson) arises from the petrous ganglion, and ascends to the tympanic cavity through a small canal on the under surface of the petrous portion of the temporal bone on the ridge which separates the carotid canal from the jugular fossa. ...

This plexus gives off:

  • (1) the lesser superficial petrosal nerve
  • (2) a branch to join the greater superficial petrosal nerve
  • (3) branches to the tympanic cavity

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 As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. eMedicine is an online clinical medical knowledge base that was founded in 1996. ... Georgetown University, incorporated as the The President and Directors of the College of Georgetown, is a private university in the United States, located in Georgetown, a historic neighborhood of Washington, D.C. Founded on January 23, 1789 by Archbishop John Carroll, it is both the oldest Roman Catholic and oldest... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...

  Results from FactBites:
Gray, Henry. 1918. Anatomy of the Human Body. Page 1047 (668 words)
The plexus is formed by (1) the tympanic branch of the glossopharyngeal; (2) the caroticotympanic nerves; (3) the smaller superficial petrosal nerve; and (4) a branch which joins the greater superficial petrosal.
The tympanic branch of the glossopharyngeal (Jacobson’s nerve) enters the tympanic cavity by an aperture in its floor close to the labyrinthic wall, and divides into branches which ramify on the promontory and enter into the formation of the tympanic plexus.
The branches of distribution of the tympanic plexus are supplied to the mucous membrane of the tympanic cavity; a branch passes to the fenestra vestibuli, another to the fenestra cochleæ, and a third to the auditory tube.
  More results at FactBites »



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