关于静脉说法哪项对A.浅静脉与浅动脉伴行B.管壁相对较动脉厚C.所有的静脉都有静脉瓣D.体循环静脉分深浅两种E.管腔比相应动脉小

作者: rantiku 人气: - 评论: 0
问题 关于静脉说法哪项对
选项 A.浅静脉与浅动脉伴行 B.管壁相对较动脉厚 C.所有的静脉都有静脉瓣 D.体循环静脉分深浅两种 E.管腔比相应动脉小
答案 D
解析

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