👉 The Morgan fluid, also known as Morgan's fluid or organ fluid, is a clear, colorless liquid found in various body cavities and spaces, such as the pleural cavity (between the lungs and chest wall), pericardial cavity (between the heart and chest wall), and the subarachnoid space (surrounding the brain). It plays a crucial role in lubricating and cushioning these organs, reducing friction during movement and preventing injury. The fluid also helps in the transport of nutrients, waste products, and immune cells, maintaining optimal physiological conditions within these cavities.