Unborn child is in amniotic fluids within the uterus. It cannot digest, breathe or excrete.
So growing out of the embryo there is a placenta attached to the child by the umbilical cord.
The placenta grows out of the embryo not the mothers. The blood vessels are the child’s not the mothers.
The placenta grows into the wall of the uterus
When the woman eats through pregnancy (glucose, amino acids and fats) these vital nutrients will pass through the woman’s blood to the child’s blood through the placenta
The placenta has a large surface area and is very thin.
The child also produces carbon dioxide and urea which will pass onto the mother to excrete.
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