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anorectal flexure


Definition: the anteroposterior curve or angle, with convesity directed anteriorly, of the anorectal junction; tonus of the puborectalis (muscle) produces the angle for maintaining fecal continence; relaxation of the muscle allows the angle to be reduced for defecation.

Synonym(s): flexura anorectalisTA, flexura perinealis (canalis ani), perineal flexure of anal canal, anorectal angle, perineal flexure of rectum

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.