The anterior part of the rectum is narrow because of peritoneum covering. The posterior part is free from peritoneum and enlarged to form trectal ampulla （）_精华吧

The anterior part of the rectum is narrow because of peritoneum covering. The posterior part is free from peritoneum and enlarged to form trectal ampulla （）

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The anterior part of the rectum is narrow because of peritoneum covering. The posterior part is free from peritoneum and enlarged to form trectal ampulla （）

A.正确

B.错误

正确答案：正确

Tag：动物解剖生理时间：2021-12-25 22:22:06

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