Question
Explain the roles of the mammalian placenta.
Answer
1. Produces hormones progesterone and oestrogen
2. Allows exchange of gases
3. Allows supply of nutrients and water to the foetus
4. Removes metabolic waste from the foetus blood to be excreted through maternal blood
5. Protects foetal blood vessels from damage by high blood pressure of maternal blood
6. Prevents mixing of maternal and foetal blood
7. Protects foetus against microorganisms
8. Prevents some chemicals /hormones from passing to the foetus
2. Allows exchange of gases
3. Allows supply of nutrients and water to the foetus
4. Removes metabolic waste from the foetus blood to be excreted through maternal blood
5. Protects foetal blood vessels from damage by high blood pressure of maternal blood
6. Prevents mixing of maternal and foetal blood
7. Protects foetus against microorganisms
8. Prevents some chemicals /hormones from passing to the foetus
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