直肠上、下静脉丛在何处互相交通：A．齿线B．栉膜带C．肛门白线D．肛管直肠环E．以上均不对

作者: rantiku 人气: - 评论: 0

问题直肠上、下静脉丛在何处互相交通：

选项 A．齿线 B．栉膜带 C．肛门白线 D．肛管直肠环 E．以上均不对

答案 C

解析

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