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Medical Term:

opening of frontal sinus


one of a pair of orifices in the floor of the frontal sinuses in the nasal part of the frontal bone, through which the frontal sinuses communicate with the ethmoidal infundibulum via the frontonasal duct.

Synonym(s): apertura sinus frontalisTA, frontal sinus aperture

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