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胎盘

出自维基百科,自由个百科全书

胎盘(学名:placenta),又称“胞衣”,是一种只有拉雌性哺乳类动物怀孕时或是每一只哺乳类动物还是胎儿时才有个暂时器官,垃拉子宫内侧个表面。

胎盘由两部分组成。一部分搭胚胎拉生物学搭基因上侪相连,另一部分是母体个一部分。

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