The pulmonary pleura is a thin membrane that covers and protects the lungs inside the chest cavity. First, this structure is an important part of the respiratory system. In addition, it allows the lungs to expand and contract during breathing.
The pleura is composed of two main layers. On one hand, there is the visceral pleura, which directly covers the surface of the lungs. On the other hand, the parietal pleura lines the inner wall of the chest cavity.
Between these two layers, there is a small space called the pleural cavity. Moreover, this space contains a small amount of pleural fluid. Because of this fluid, the two pleural layers can slide smoothly during breathing.
During inhalation, the lungs expand inside the chest. Then, the pleurae of the lungs allow this movement to occur with minimal friction. In this way, the lungs increase their volume to receive oxygen.
Meanwhile, during exhalation, the lungs contract and release carbon dioxide from the body. Therefore, the pleura helps maintain normal lung movement.
Furthermore, the pulmonary pleura also has a protective function. For example, it helps keep the lungs in their proper position inside the chest. Likewise, it helps prevent lung collapse.
The pleural fluid also reduces friction between the pleural surfaces. For this reason, respiratory movements occur efficiently.
In conclusion, the pulmonary pleura is an essential structure that covers the lungs and facilitates their movement during breathing. Thanks to this function, the respiratory system can work properly.