In mammals, the diaphragm helps

Options

A. In dividing the body cavity into two compartments
B. To protect lungs
C. In respiration
D. To protect heart

Answer

**Step-by-Step Solution:**

1. **Understanding the Diaphragm's Structure**: The diaphragm is a dome-shaped muscle that separates the thoracic cavity (where the lungs are located) from the abdominal cavity (where the stomach is located).

2. **Function of the Diaphragm in Respiration**: The primary function of the diaphragm is to facilitate breathing. During inhalation, the diaphragm contracts and moves downward, increasing the volume of the thoracic cavity and allowing air to flow into the lungs. Conversely, during exhalation, the diaphragm relaxes and moves upward, decreasing the volume of the thoracic cavity and pushing air out of the lungs.

3. **Role in Protecting Organs**: While the diaphragm does provide some protection to the lungs and stomach by acting as a barrier, its main role is not protection but rather in the process of respiration.

4. **Conclusion**: The diaphragm plays a crucial role in respiration, making it essential for the breathing process in mammals. It is responsible for the majority of the work done during inhalation and exhalation.

5. **Final Answer**: In mammals, the diaphragm helps primarily in respiration.

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