先天发育缺陷所形成的肛门闭锁或肛门狭窄多发生于：A．肛管直肠环B．肛门白线C．齿线D．解剖肛管E．外科肛管

作者: rantiku 人气: - 评论: 0

问题先天发育缺陷所形成的肛门闭锁或肛门狭窄多发生于：

选项 A．肛管直肠环 B．肛门白线 C．齿线 D．解剖肛管 E．外科肛管

答案 C

解析

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