keuhkokinnanesteet

Keuhkokinnanesteet, also known as pleural fluid, is a serous fluid that lubricates the pleural space. The pleural space is a potential space that exists between the two layers of pleura, the serous membranes that line the lungs and the chest cavity. One layer, the visceral pleura, covers the outer surface of the lungs, while the other layer, the parietal pleura, lines the inner surface of the chest wall, diaphragm, and mediastinum.

The primary function of keuhkokinnanesteet is to reduce friction between the visceral and parietal pleura during respiration. As the lungs expand and contract within the chest cavity, the pleural fluid allows the lung surfaces to glide smoothly against the chest wall. This smooth movement is essential for efficient and comfortable breathing.

Keuhkokinnanesteet is produced by the mesothelial cells lining the pleural surfaces and is reabsorbed by the lymphatic system and pleural capillaries. The volume of pleural fluid in a healthy adult is typically small, ranging from about 5 to 15 milliliters on each side of the chest.

Changes in the amount or composition of keuhkokinnanesteet can indicate underlying medical conditions. An accumulation of excess pleural fluid is called pleural effusion. Pleural effusion can be caused by various factors, including infections (like pneumonia), inflammation, heart failure, kidney disease, liver disease, and certain types of cancer. Conditions that cause inflammation of the pleura are known as pleuritis or pleurisy. Diagnosis of pleural effusion often involves imaging techniques such as chest X-rays or ultrasound, and sometimes thoracentesis, a procedure to remove and analyze the pleural fluid.