Tympanic cavity

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Tympanic cavity
The cochlea and vestibule, viewed from above. (Tympanic cavity labeled at upper right.)
Bones and muscles in the tympanic cavity in the middle ear
Latin cavitas tympani
Gray's subject #230 1037
Artery stylomastoid artery
Precursor first pharyngeal pouch
Dorlands/Elsevier c_16/12220641

The tympanic cavity is a small cavity surrounding the bones of the middle ear.

It is formed from the tubotympanic sulcus, an expansion of the first pharyngeal pouch.

It is mostly surrounded by the bony labyrinth, except on its lateral surface, where it abuts the external auditory meatus from which it is separated by the tympanic membrane (eardrum).

Clinical significance

If damaged, the tympanic membrane can be repaired in a procedure called tympanoplasty.

Should fluid accumulate within the middle ear as the result of infection or for some other reason, it can be drained by puncturing the tympanic membrane with a small bore needle (tympanocentesis).

See also

Additional images

External links