门静脉由哪两条静脉汇合而成A．肠系膜上静脉和肠系膜下静脉B．肠系膜上静脉和脾静脉C．胃左静脉和肠系膜下静脉D．脐静脉和肠系膜上静脉E．肠系...

作者: rantiku 人气: - 评论: 0

问题门静脉由哪两条静脉汇合而成

选项 A．肠系膜上静脉和肠系膜下静脉 B．肠系膜上静脉和脾静脉 C．胃左静脉和肠系膜下静脉 D．脐静脉和肠系膜上静脉 E．肠系膜下静脉和脾静脉

答案 B

解析：肠系膜上静脉和脾静脉在胰颈后方汇合成门静脉。

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