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tegmen tympani

 

Definition: the roof of the middle ear, formed by the thin anterior surface of the petrous portion of the temporal bone. Its anterior edge is inserted into the petrosquamous fissure so that it can be seen as a wedge of bone subdividing that fissure into a squamotympanic and a petrotympanic fissure.

Synonym(s): roof of tympanum

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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