Tympanic cavity
Cavum tympani
Definition
The tympanic cavity (Cavum tympani) is carved within the auricular part* of the temporal bone, between the petrous part, the tympanic part, the endotympanic part when it exists, and the cavities of the inner ear**.
*The auricular part is located between the squamous part that covers it rostrolaterally, the parietal bone and the occipital bone.
**Together, all these structures of the petrous part form the bony labyrinth (Labyrinthus osseus).
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