Mastoid wall of tympanic cavity
Encyclopedia
The mastoid or posterior wall is wider above than below, and presents for examination the entrance to the tympanic antrum, the pyramidal eminence
, and the fossa incudis.
Pyramidal eminence
The pyramidal eminence is situated immediately behind the fenestra vestibuli, and in front of the vertical portion of the facial canal; it is hollow, and contains the Stapedius muscle; its summit projects forward toward the fenestra vestibuli, and is pierced by a small aperture which transmits the...
, and the fossa incudis.
External links
- http://www.dartmouth.edu/~humananatomy/figures/chapter_44/44-5.HTM