What are the serous membranes covering the lungs and lining the thorax referred to as?

The correct term for the serous membranes that cover the lungs and line the thoracic cavity is "pleura." The pleura consists of two layers: the visceral pleura, which is attached directly to the surface of the lungs, and the parietal pleura, which lines the thoracic wall. This dual-layered membrane creates a pleural cavity filled with pleural fluid, which helps lubricate the surfaces during respiration, allowing the lungs to expand and contract smoothly.

Understanding the pleura is vital for EMTs because it plays a key role in protecting the lungs and facilitating respiration. When discussing conditions such as pleuritis or pleural effusion, knowing the correct terminology enhances communication regarding patient conditions and the management of respiratory issues.