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Medical Term:

macula cribrosa

Definition

one of three areas on the wall of the vestibule of the labyrinth, marked by numerous foramina giving passage to nerve filaments supplying portions of the membranous labyrinth: macula cribrosa inferior [TA], located in the posterior bony ampulla for passage of posterior ampullary nerve fibers; macula cribrosa media [TA], area near the base of the cochlea through which the saccular nerve fibers pass; macula cribrosa superior [TA], perforated area above the elliptic recess for passage of the utriculoampullary nerve fibers. Macula cribrosa quarta is a name sometimes applied to the opening for the cochlear nerve.

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