Hello, uv. Ryazanov I.Menja the question, when zakanchi very or very much interests...

[Julia]

Hello, uv. Ryazanov I.Menja the question when the period of embryonal or fetal;embrionic development comes to an end very or very much interests, in how much weeks the placenta enters the role and whether she starts to develop or produce hormones (Progesteronum in particular). At me now 10 weeks since the first day posl. A menses.

[Ryazanov And.]

The embryonal or fetal;embrionic period comes to an end in 12 weeks of pregnancy. By this time in a placenta the circulation though it is final she begins is not generated yet. In her chorionic Gonadotropinum, Progesteronum, estrogens, a somatotropic hormone are formed.