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15h 29min, sep 22, 2002 y - First Trimester: Embryo

Description:

By week 4 the actual embryo is now forming. Alone with the amnion and yolk sac. The amnion is necessary because it surrounds and protects the embryo. It will later on also have more use. The yolk sac produces blood for the embryo.

Added to timeline:

Growth and Development Timeline, Jacky Villanueva

ByJacqueline Villanueva
7 Dec 2017
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490

Date:

15h 29min, sep 22, 2002 y
Now
~ 23 years ago

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