Foetal membrane which keeps the embryo shock proof is

Options

A. Amnion
B. Chorion
C. Allantois
D. Yolk sac

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the fetal membrane that protects the embryo from shock or environmental stress.

2. **Identifying the Fetal Membranes:**
There are four main fetal membranes associated with the embryo:
- Amnion
- Chorion
- Allantois
- Yolk sac

3. **Analyzing Each Membrane:**
- **Amnion:** This is the innermost membrane that surrounds the embryo. It contains amniotic fluid, which provides a cushioning effect, protecting the embryo from mechanical shocks and environmental stresses.
- **Chorion:** This is the outermost membrane that facilitates the exchange of nutrients and gases between the embryo and the placenta but does not provide shock absorption.
- **Allantois:** This membrane is involved in gas exchange and waste management but does not serve as a shock absorber.
- **Yolk sac:** This provides nutrition to the embryo but does not protect it from shocks.

4. **Conclusion:**
Based on the analysis, the amnion is the fetal membrane that keeps the embryo shock-proof due to the presence of amniotic fluid.

5. **Final Answer:**
The fetal membrane which keeps the embryo shock-proof is the **Amnion**.

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