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Medical Term:

petrotympanic fissure


a fissure between the tympanic and petrous portions of the temporal bone; it transmits the chorda tympani nerve through a small patent portion, the anterior canaliculus of the chorda tympani.

Synonym(s): fissura petrotympanicaTA, glaserian fissure

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