3.11

Placenta:

-The wall of the Uterus is called the Placenta.
- When the child is in the uterus, it is full of embryotic fluid
- The child cant digest or breath or excrete whilst in the mother.
- The placenta grows out of the developing embryo, does not grow out of the mother.
- The Blood vessels inside the placenta are the child’s blood vessels (arteries, veins)
- Placenta grows into the wall of the uterus.
- Glucose amino acids, fats, travel through the bloodstream of the mother and into the wall of the uterus.
- The Sugars, amino acids and fats will cross into the child’s blood at the placenta and then taken into the child.
- Placenta has a large surface area.
-The barrier between the mother’s blood and the child’s blood is very thin.