Pleural fluid
Pleural Fluid
Pleural fluid (pronounced: ploor-al floo-id) is a serous fluid that is produced by the pleura, the thin tissue layer that lines the thoracic cavity and surrounds the lungs. This fluid serves to lubricate the pleural surfaces and allows smooth movement of the lungs during respiration.
Etymology
The term "pleural" is derived from the Greek word "pleura," which means "side" or "rib." The term "fluid" comes from the Latin word "fluidus," which means "flowing."
Function
Pleural fluid is essential for normal respiratory function. It creates a pressure gradient that aids in lung expansion and provides a lubricating surface that prevents friction between the pleural surfaces during respiration. In addition, it also plays a role in immunity by containing white blood cells that help fight infections.
Related Terms
- Pleura: The thin tissue layer that lines the thoracic cavity and surrounds the lungs.
- Thoracic cavity: The chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia).
- Respiration: The process of inhaling oxygen and exhaling carbon dioxide.
- White blood cells: Cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
Disorders
Abnormalities in the quantity or quality of pleural fluid can lead to various medical conditions. These include:
- Pleural effusion: An excessive accumulation of fluid in the pleural space.
- Pneumothorax: The presence of air or gas in the pleural space causing the lung to collapse.
- Hemothorax: A type of pleural effusion in which blood accumulates in the pleural cavity.
- Empyema: A condition where pus gathers in the pleural space.
See Also
- Pleural tap: A procedure to remove fluid from the space between the lungs and the chest wall.
- Thoracentesis: A procedure in which a needle is inserted into the pleural space to remove fluid or air.
External links
- Medical encyclopedia article on Pleural fluid
- Wikipedia's article - Pleural fluid
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