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孕期一般是多少天

更新时间: 2020-11-05 00:00:00     

孕期一般要280天,40周左右,在预产期的前两周或后两周内分娩均属正常。

怀孕是指哺乳类雌性(包括人类)在体内有一个或多个胎儿或胚胎。人类的妊娠是哺乳动物中研究的最详细的。人类的妊娠从最后一次月经到分娩持续大约40星期(从排卵算起是38周)。

关键词: 孕期 一般 多少

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