结构高低级

大体解剖 > 消化系统 > 大肠 > 直肠 > [直肠]骶曲

翻译

描述

The rectum presents two antero-posterior curves: an upper flexure (Sacral flexure), with its convexity backward, and a lower flexure (Anorectal flexure; Perineal flexure), with its convexity forward, at the junction between the rectum and the anal canal.


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