3 h 29 min, 29 sept. 2002 ans - First Trimester: Placenta
Description:
Around the 5th week of this trimester the placenta is developed. The placenta provides the growing embryo with oxygen and nutrients it needs. The placenta also removes waste from the blood of the embryo.Ajouté au bande de temps:
Date:
3 h 29 min, 29 sept. 2002 ans
Maintenaint
~ Il y a 23 ans