👉 Acquired fluid, also known as colloid fluid or pleural fluid, is a clear, colorless liquid that fills the spaces between the lungs and the chest wall, known as the pleural cavity. This fluid plays a crucial role in maintaining lung function by reducing friction between the lungs and the chest wall during breathing. It is produced by both the capillaries in the lung tissue and the interstitial spaces of the lungs, with a balance maintained by the lymphatic system. Acquired fluid can accumulate in the pleural cavity due to various conditions, such as heart failure, lung infections, or malignancies, leading to conditions like pleural effusion. The fluid's composition and volume are tightly regulated, but when it exceeds normal levels, it can impair respiratory function and cause symptoms like shortness of breath.
