work of placenta in a preagenent women
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The placenta is an organ that develops in your uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The placenta attaches to the wall of your uterus, and your baby's umbilical cord arises from it.
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Role of placenta:
1. Exchange of water between mother and the foetus.
2. Exchange of nutrients.
3. Exchange of respiratory gases.
4. Excretion of nitrogenous waste from foetus. Nitrogenous waste crosses the placenta and is removed by mothers kidney.
5. Antibodies also cross the placenta and provide immunity to the baby.
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