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Medical Term:

tympanomastoid fissure


a fissure that separates the tympanic portion from the mastoid portion of the temporal bone; it transmits the auricular branch of the vagus nerve.

Synonym(s): fissura tympanomastoideaTA, auricular fissure, tympanomastoid suture

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