0 h 47 m, 13 oct 2002 año - First Trimester: Umbilical Cord
Descripción:
During week 7 the umbilical cord develops. The umbilical cord is what connects the mother to its baby. It is the way of transportation of oxygen and nutrients for the baby. Waste is also disposed through the umbilical cord.
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0 h 47 m, 13 oct 2002 año
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