Promontory of tympanic cavity

The promontory of the tympanic cavity, also known as the cochlear promontory is a rounded hollow prominence^{[citation needed]} 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
Latin	promontorium tympani
TA98	A15.3.02.011
TA2	6899
FMA	77694
Anatomical terminology [edit on Wikidata]

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.^{[citation needed]}

Additional images

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