题目内容

关于妊娠期子宫的变化，哪项是正确的

A. 妊娠期BraxtonHicks收缩，宫内压力约为25mmHg
B. 足月妊娠子宫血流量70%～75%供应胎盘，20%～25%供应子宫蜕膜层
C. 足月妊娠时子宫血流量为300～500ml/分
D. 子宫肌细胞肥大，胞浆内充满具有收缩活性的肌动蛋白与肌浆球蛋白
E. 子宫肌壁厚度由非孕时的约1cm至足月时增加一倍

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