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 ()


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