Tympanic cavity
| Tympanic cavity | |
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Tympanic cavity
Bones and muscles in the tympanic cavity in the middle ear
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The cochlea and vestibule, viewed from above. (Tympanic cavity labeled at upper right.)
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| Details | |
| Precursor | first pharyngeal pouch |
| Artery | stylomastoid artery |
| Identifiers | |
| Latin | cavitas tympani |
| TA | A15.3.02.002 |
| FMA | 56461 |
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Anatomical terminology
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The tympanic cavity is a small cavity surrounding the bones of the middle ear.
On its lateral surface, it abuts the external auditory meatus from which it is separated by the tympanic membrane (eardrum).
The tympanic cavity is bounded by:
It is formed from the tubotympanic recess, an expansion of the first pharyngeal pouch.
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 large bore needle (tympanocentesis).
External and middle ear, opened from the front. Right side.
Horizontal section through left ear; upper half of section.
Tympanic cavity. Facial canal. Internal carotid artery.
Auditory ossicles. Tympanic cavity. Deep dissection.
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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