题目内容
关于胎儿附属物叙述错误的是
2021-11-10
A.包括胎盘、胎膜、脐带、羊水
B.胎盘由羊膜、叶状绒毛膜、底蜕膜组成
C.足月胎儿脐带长30~100cm
D.叶状绒毛膜是胎盘的胎儿部分
E.妊娠足月时羊水呈弱酸性,量约800ml
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