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胎儿多少周心脏发育完善
更新时间: 2020-11-04 00:00:00  

怀孕18周时胎儿的心脏发育完善,正常情况下怀孕第18周时可以通过超声检查清晰的发现胎儿的心内结构图像。胎儿的心脏是一个发育非常早的器官,正常情况下胚胎出现的第2周就有了原始心管组织,等到胚胎生长发育到第8周末,心脏的正常结构也就形成了,等到怀孕的第10周就出现了心脏与动脉的关系,怀孕第14周通过超声检查可以变出胎儿的4个心腔。

关键词: 胎儿 多少 心脏 发育 完善

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