4 h 22 min, 9 oct. 2002 ans - Placenta stage
Description:
The placenta functions as a organ with two components: the fetal placenta which develops from the same blastocyst that forms the fetus, and the maternal placenta.these both give the organisim the nutrints it needsAjouté au bande de temps:
Date:
4 h 22 min, 9 oct. 2002 ans
Maintenaint
~ Il y a 23 ans