Зачатие. Прогенез. Овуляция. Эмбриогенез. Беременность по неделям © Нuman embryogenesis

Topics youtube.com/user/1MGMU/playlists?view=50&sort=dd&s… Early human embryogenesis, 20 minutes, 1988 Embryogenesis is the physiological process during which the formation and development of an embryo occurs. Embryogenesis is the initial stage of ontogenesis of living beings. The process of embryogenesis begins with conception - the fertilization of a female egg by a male sperm. A fertilized egg forms a zygote, the only diploid cell of a new living organism. Under favorable conditions, the zygote then undergoes several successive mitotic divisions, without a significant increase in the total volume or mass of the resulting cells. This process is called crushing. It leads to the formation of a multicellular embryo. ------------------------ Instead of donations www.litres.ru/sergey-iosifovich-dik/zhertva-vospit…

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