What is the name of the potential space between the parietal pleura and the visceral pleura?

The potential space between the parietal pleura and the visceral pleura is known as the pleural cavity. This cavity contains a small amount of pleural fluid, which helps reduce friction between the pleural membranes during breathing and allows for smooth movement of the lungs within the thoracic cavity. The pleural cavity plays a critical role in respiratory mechanics, as changes in pressure within this space are essential for lung expansion and contraction.

The other terms mentioned do not accurately describe this specific anatomical space. For instance, "pleural space" is a less commonly used term and is often thought of interchangeably with "pleural cavity," but it lacks the precise terminology used in anatomical contexts. "Pleural recess" refers to areas in the pleural cavity that can accommodate lung expansion, while "pleural membrane" is a general term that describes the layers of the pleura but does not denote the space itself. Therefore, understanding these terms and their correct usage is essential in the context of human anatomy and respiratory physiology.