结构高低级

大体解剖 > 消化系统 > 大肠 > 肛管 > Junctio anorectalis

翻译

描述

The anal canal forms an angle (Anorectal flexure; Perineal flexure) with the lower part of the rectum (Anorectal junction), and measures from 2.5 to 4 cm. in length.


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