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词汇 Sphincter ani internus
分类 英语词汇 英语翻译词典
释义

Sphincter ani internus

英语例句库

In recent years,we used the operation way combining stripping external hemorrhoid,ligating internal hemorrhoid and cutting part of sphincter ani internus to treat 32 such patients.

嵌顿性混合痔病人相当痛苦,近年来,我科采用外剥内扎并切断部分内括约肌手术治疗32例。

英语百科

Internal anal sphincter

(重定向自Sphincter ani internus)

The internal anal sphincter, IAS, (or sphincter ani internus) is a muscular ring that surrounds about 2.5–4.0 cm of the anal canal; its inferior border is in contact with, but quite separate from, the external anal sphincter.

It is about 5 mm thick, and is formed by an aggregation of the involuntary circular fibers of the rectum. Its lower border is about 6 mm from the orifice of the anus.

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