9h 43min, aug 15, 2002 y - The baby's heart and circulatory system forms.
Description:
This event is important because at week 5 the heart and circulatory forms. This usually happens during week 5. Also the baby's blood will be able to circulate throughout the body.
Added to timeline:
Date:
9h 43min, aug 15, 2002 y
Now
~ 23 years ago
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