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多少周生殖结节分化消失
更新时间: 2020-11-04 00:00:00  

怀孕17周后。生殖结节指尿生殖褶前方左右相会合呈结节形隆起。在哺乳类外生殖器形成的初期,在尿生殖口(尿生殖窦)的头端形成的小突起,雄性发展成阴茎,雌性则形成阴蒂。被生殖结节的尾侧正中线的沟(尿道沟)隔开的皮皱,为尿道褶,它向后延伸,从两侧夹住尿生殖口。

关键词: 多少 生殖 结节 分化 消失

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