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 needs
Ajouté au bande de temps:
Aiden Allen Bardelmeier Growth and development timeline
Date:
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