Tympanic cavity
Cavum tympani
Definition
The tympanic cavity is divided into the epitympanic recess, the tympanic cavity proper, and occasionnaly a ventral cavity.
The epitympanic recess is the smallest of the three areas and is occupied almost entirely by the head of the malleus and incus.
The tympanic cavity proper is adjacent to the tympanic membrane. On the medial wall of the tympanic cavity proper, there is a bony eminence, the promontory of the petrous portion of the temporal bone, which houses the cochlea.
The ventral part of tympanic cavity (ventral cavity; fundic part of tympanic cavity) is occuyed by the ventromedial portion of the tympanic bulla and separated from the tympanic cavity proper by the septum bullae
References
Text by Antoine Micheau, MD - Copyright IMAIOS
Njaa, Brad & Cole, Lynette & Tabacca, Natalie. (2012). Practical Otic Anatomy and Physiology of the Dog and Cat. Veterinary Clinics of North America Small Animal Practice. 42. 1109-26. 10.1016/j.cvsm.2012.08.011.
