Florida State Paramedic Practice Exam

What does the visceral pleura cover?

1. Inner lining of the thoracic cavity

2. Outer lining that covers the lungs

3. Space between the pleurae

4. Protective membrane of the heart

The correct answer is: Outer lining that covers the lungs

The visceral pleura is specifically the delicate membrane that covers the surface of the lungs. This layer is in direct contact with lung tissue, providing a protective covering that allows for smooth movement between the lungs and the surrounding structures during respiration. As the lungs inflate and deflate, the visceral pleura helps reduce friction against the thoracic wall and the opposite pleura layer, facilitating efficient breathing. The other options refer to different anatomical structures. The inner lining of the thoracic cavity is covered by the parietal pleura, which is distinct from the visceral pleura. Similarly, the space between the pleurae refers to the pleural cavity, which contains pleural fluid and is not covered by visceral pleura. The protective membrane of the heart relates to the pericardium, which is also separate from the lung-related structures. Thus, the correct answer emphasizes the specific role of the visceral pleura in lung protection and function.