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The Endowment for Human Development
The Endowment for Human Development
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End of Embryonic Period


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: Osiem tygodni wyznacza koniec okresu zarodkowego.

W tym czasie zarodek ludzki rozwinął się z jednej komórki do blisko 1 miliarda komórek, które tworzą ponad 4.000 różnych struktur anatomicznych.

Zarodek posiada już teraz ponad 90% struktur obecnych u dorosłego człowieka.

All ages referenced to fertilization, not last menstrual period.
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