Promontory of tympanic cavity

The promontory of the tympanic cavity, also known as the cochlear promontory is a rounded hollow prominence upon - and most prominent feature of - the medial wall of the tympanic cavity formed by the underlying first turn of the cochlea. The surface of the promontory is furrowed by fine grooves that accommodate to the strands of the tympanic plexus.[1]

Promontory of tympanic cavity
View of the inner wall of the tympanum. (Promontory visible near center.)
Details
Identifiers
Latinpromontorium tympani
TA98A15.3.02.011
TA26899
FMA77694
Anatomical terminology

The oval window is situated superoposteriorly to the promontory, and the round window inferoposteriorly to it.[1]

A minute spicule of bone frequently connects the promontory to the pyramidal eminence.

Additional images
  • Coronal section of right temporal bone.
    Coronal section of right temporal bone.
  • The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view.
    The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view.

References

Public domain This article incorporates text in the public domain from page 1042 of the 20th edition of Gray's Anatomy (1918)

  1. Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 415. ISBN 978-0-7295-3752-0.
  • lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University)


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