The pleura is a connective tissue sheath that covers which organ?

The pleura is a specialized membrane that encases the lungs. It consists of two layers: the visceral pleura, which directly covers the lung surface, and the parietal pleura, which lines the chest cavity. This dual-layer structure plays a crucial role in creating a pleural cavity that contains pleural fluid, allowing for smooth movement of the lungs during respiration. It also helps maintain proper pressure mechanics essential for effective breathing.

Understanding the role of the pleura is important in the context of respiratory physiology and pathology, as conditions affecting this membrane, such as pleuritis or pleural effusion, can significantly impact lung function and overall health.