除外哪一项，下列描述均可区别肠系膜上静脉和肠系膜上动脉：A．肠系膜上静脉管径较肠系膜上动脉小B．矢状扫查肠系膜上动脉远离腹主动脉角度加大，肠系膜上静脉...

作者: rantiku 人气: - 评论: 0

问题除外哪一项，下列描述均可区别肠系膜上静脉和肠系膜上动脉：

选项 A．肠系膜上静脉管径较肠系膜上动脉小 B．矢状扫查肠系膜上动脉远离腹主动脉角度加大，肠系膜上静脉趋向平行于腹主动脉 C．随呼吸变化肠系膜上静脉内径发生变化 D．追踪肠系膜上静脉进入门静脉

答案 A

解析

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