Diaphragm is a dome-shaped muscular structure
which separates

Options

A. Coelomic cavity from pelvic cavity
B. Pleural cavity from thoracic cavity
C. Thoracic cavity from abdominal cavity
D. Pelvic cavity frome abdominal cavity

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of the Diaphragm**: The diaphragm is a dome-shaped muscular structure located at the base of the thoracic cavity. It plays a crucial role in the respiratory system.

2. **Function of the Diaphragm**: The diaphragm is known as the principal respiratory muscle. It contracts and relaxes to facilitate breathing by changing the volume of the thoracic cavity.

3. **Separation of Cavities**: The diaphragm separates two major body cavities: the thoracic cavity, which contains the lungs and heart, and the abdominal cavity, which houses organs such as the stomach, liver, and intestines.

4. **Conclusion**: Therefore, the diaphragm separates the thoracic cavity from the abdominal cavity.

5. **Final Answer**: The correct answer is that the diaphragm separates the thoracic cavity from the abdominal cavity.

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