Pleural fluid is secreted by

Options

A. Myocardium
B. Parietal Pleura
C. Visceral Pleura
D. Both 2 and 3

Answer

**Step-by-Step Solution:**

1. **Understanding Pleural Fluid:**
- Pleural fluid is a lubricating fluid found in the pleural cavity, which is the space between the lungs and the chest wall. It plays a crucial role in reducing friction between the lungs and the chest wall during breathing.

2. **Identifying the Sources of Pleural Fluid:**
- The pleura is a double-layered membrane surrounding the lungs. There are two types of pleura:
- **Parietal Pleura:** This is the outer layer that lines the chest wall.
- **Visceral Pleura:** This is the inner layer that covers the lungs directly.

3. **Eliminating Incorrect Options:**
- The question provides several options:
- **Myocardium:** This refers to the muscular tissue of the heart and is not involved in the secretion of pleural fluid.
- **Parietal Pleura:** While it is part of the pleura, it does not secrete pleural fluid.
- **Visceral Pleura:** This is the layer that directly secretes the pleural fluid.

4. **Conclusion:**
- Since the visceral pleura is responsible for the secretion of pleural fluid, the correct answer to the question is **Visceral Pleura**.

**Final Answer:**
- Pleural fluid is secreted by the **Visceral Pleura**.

---