What are the membrane spaces AND organs in the pleural?

The pleural cavity is a potential space between the two layers of the pleura, which are the visceral pleura covering the lungs and the parietal pleura lining the chest wall. This cavity contains pleural fluid, which reduces friction during breathing. The main organs associated with the pleural space are the lungs, which are encased by the visceral pleura, and the surrounding chest wall, which is lined by the parietal pleura. Additionally, the pleural space plays a role in respiratory mechanics by creating negative pressure that aids in lung expansion.