Dictionary > Petrosal fossula

Petrosal fossula

petrosal fossula
A small and often only faintly marked depression on the inferior surface of the petrous portion of the temporal bone, between the jugular fossa and the opening of the carotid canal; here opens the canaliculus tympanicus transmitting the tympanic nerve.
Synonym: fossula petrosa, petrosal fossa, receptaculum ganglii petrosi.


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