题目内容
关于输尿管的解剖,错误的是( )。
2021-10-14
A.输尿管有3个生理性狭窄
B.输尿管全长约20〜30cm
C.输尿管的腹段位于腹腔内
D.输尿管腹段供血主要来自肾动脉
E.输尿管壁为平滑肌
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