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Pentru a ramane insarcinata trebuie ca un ovul (eliberat de ovar lunar in cadrul ciclului menstrual) sa fie fertilizat de spermatozoizi din lichidul seminal ejaculat de barbat in vaginul femeii (in cadrul unui contact sexual in care nu se foloseste niciun mijloc de contraceptie). Fertilizarea are loc in trompa utimplantarea ovululuierina.。 See more

Atașarea (implantarea) poate determina o ușoară sângerare, deoarece mucoasa uterină este bogat vascularizată. Când apare sângerarea de implantare? Sângerarea de implantare apare la aproximativ 10-14 zile de la。

Daca fecundarea a avut loc, dupa aproximativ 6-7 zile, are loc implantarea ovulului fecundat la nivelul endometrului. De asemenea, se produce secretia de HCG (gonadotropina corioniimplantarea ovululuica umana), un hormon esential in。

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