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受精的过程包括哪几步
更新时间: 2020-11-11 00:00:00  

受精的过程包括精子与卵子接触,精子穿过卵细胞的放射冠和透明带,二次分裂和两性原核融合。性交后精液积存在阴道内,精液内有大量的精子,精子的存活时间约为72小时,活动的精子通过子宫到输卵管壶腹部与卵子相遇、受精,受精卵再经输卵管输送到子宫腔内,并在宫腔内“遨游”2~3天,寻找合适的落脚点,然后着床,在子宫腔内生长发育直至足月分娩。

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