Foetal membranes provide

Options

A. Protection of embryo
B. Nutrition of embryo
C. Respiration of embryo
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding Fetal Membranes**: Fetal membranes are structures that surround and protect the developing embryo and later the fetus. They are also known as extra-embryonic membranes.

2. **Identifying the Types of Fetal Membranes**: There are four main types of fetal membranes:
- **Amnion**: This membrane forms a protective sac around the fetus, filled with amniotic fluid.
- **Chorion**: This outermost membrane contributes to the formation of the placenta and facilitates nutrient and gas exchange.
- **Allantois**: This membrane is involved in the early development of the urinary bladder and plays a role in gas exchange and waste disposal.
- **Yolk Sac**: This membrane provides early nourishment to the embryo before the placenta is fully developed.

3. **Functions of Fetal Membranes**:
- **Protection**: The amnion provides a cushioning effect, protecting the fetus from physical shocks.
- **Nutrient Supply**: The yolk sac and chorion are involved in nutrient transfer to the developing fetus.
- **Waste Removal**: The allantois helps in the removal of waste products.
- **Gas Exchange**: The chorion plays a crucial role in gas exchange between the mother and the fetus.

4. **Conclusion**: Fetal membranes are essential for the proper development of the fetus, providing protection, nourishment, waste removal, and facilitating gas exchange.