题目内容
关于直肠解剖的叙述,不恰当的是
2021-11-30
A.直肠壶腹前壁与肛管几成直角
B.直肠上部与骶骨曲度一致,形成骶曲
C.直肠属腹膜内位器官
D.直肠环肌在下部肥厚形成肛门内括约肌
E.直肠瓣内有环肌纤维
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