Diaphragm in mammals plays a major role in_______.

Options

A. digestion
B. excretion
C. respiration
D. co-ordination

Answer

**Step-by-Step Solution:**

1. **Understanding the Role of the Diaphragm:**
- The diaphragm is a muscular structure located between the thoracic cavity (where the lungs are) and the abdominal cavity (where the stomach is).

2. **Function During Breathing:**
- When mammals inhale (inspiration), the diaphragm contracts and moves downward, which increases the volume of the thoracic cavity. This decrease in pressure allows air to flow into the lungs.
- Conversely, during exhalation (expiration), the diaphragm relaxes and moves upward, decreasing the volume of the thoracic cavity and pushing air out of the lungs.

3. **Importance of the Diaphragm:**
- The diaphragm plays a crucial role in the respiratory process, facilitating the exchange of oxygen and carbon dioxide in the lungs.

4. **Conclusion:**
- Therefore, the diaphragm in mammals plays a major role in respiration.

**Final Answer:**
Diaphragm in mammals plays a major role in **respiration**.

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