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孕妇22周胎盘是多少正常

更新时间: 2020-11-04 00:00:00     

孕22周胎盘厚度标准在22毫米左右,之后还会随着孕周不断增厚。

胎盘(placenta)是后兽类和真兽类哺乳动物妊娠期间由胚胎的胚膜和母体子宫内膜联合长成的母子间交换物质的过渡性器官。胎儿在子宫中发育,依靠胎盘从母体取得营养,而双方保持相当的独立性。

关键词: 孕妇 胎盘 多少 正常

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