define Placenta and state its function
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Placenta is a special umbilical cord that develops in the fourth week of pregnancy. It establishes an intimate connection between the foetal membrane and the uterine wall. Function of placenta: The exchange of materials between the mother's blood and the blood of foetus takes place through the placenta.
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The placenta is an organ that develops in uterus during pregnancy in female. This structure provides oxygen and nutrients to growing baby and removes waste products from baby's blood.
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