What is significance of amniotic fluid ?

Options

A. Prevents dessication and helps in body movements of foetus
B. Provides nutrition
C. Helps in gaseous exchange
D. Helps in excretion

Answer

### Step-by-Step Solution:

1. **Definition of Amniotic Fluid**: Amniotic fluid is the liquid that surrounds and protects the fetus in the amniotic sac within the mother's womb.

**Hint**: Think about the role of a protective environment for the developing fetus.

2. **Protection Against Shock**: One of the primary functions of amniotic fluid is to provide a cushion for the fetus, protecting it from physical shocks and impacts.

**Hint**: Consider how cushioning can help prevent injury to the fetus.

3. **Prevention of Desiccation**: Amniotic fluid prevents the fetus from drying out (desiccation) by maintaining a stable environment.

**Hint**: Reflect on how moisture is crucial for the survival of living organisms.

4. **Facilitation of Movement**: The fluid allows the fetus to move freely, which is important for musculoskeletal development. The movements help in the development of muscles and bones.

**Hint**: Think about how movement is essential for growth and development in any organism.

5. **Role in Nutrition and Excretion**: While amniotic fluid itself does not provide nutrition, it plays a supportive role by allowing the transfer of nutrients and waste products through the placenta, which is the organ that connects the mother and fetus.

**Hint**: Remember the importance of the placenta in the exchange of materials between mother and fetus.

6. **Gaseous Exchange**: The placenta is also responsible for gaseous exchange, allowing the fetus to receive oxygen and eliminate carbon dioxide.

**Hint**: Consider how oxygen is vital for cellular respiration and overall fetal development.

### Summary of Significance:
- Amniotic fluid provides a protective cushion for the fetus.
- It prevents desiccation and maintains a stable environment.
- It facilitates fetal movement, which is essential for development.
- Nutritional and waste exchange occurs through the placenta, not directly through the amniotic fluid.