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Medical Term:

anal columns


a number of vertical ridges in the mucous membrane of the upper half of the anal canal formed as the caliber of the canal is sharply reduced from that of the rectal ampulla.

Synonym(s): columnae analesTA, Morgagni columns, rectal columns

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