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怀孕多少周可以看胚囊

更新时间: 2020-11-04 00:00:00     

一般在怀孕40天,也就是6周左右就可以看到孕囊了,一开始孕囊是很细小的,然后慢慢地长大。

孕囊是原始的胎盘组织,被羊膜、血管网包裹的小胚胎。孕囊是怀孕最初的形态,那时候胎儿还没有形成,胎芽出现时已经有胎心跳动了。

关键词: 怀孕 多少 可以

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