单选题:有关子宫动脉的描述,不恰当的是(  )

题目内容:
有关子宫动脉的描述,不恰当的是(  ) A.是髂内动脉前干的分支
B.约距宫颈内口处水平与输尿管交叉
C.在宫颈阴道部分为上、下两支
D.子宫动脉的上支可营养子宫体、卵巢和输卵管
E.子宫动脉的下支可营养子宫颈和阴道上部
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