👉 The side fluid, also known as interstitial fluid or extracellular fluid, is a vital component of the body's fluid system that exists outside of cells. It fills the spaces between cells (interstitial spaces) and within the cavities of tissues, making up about 60% of total body water. This fluid is crucial for maintaining cell function, nutrient transport, waste removal, and overall homeostasis. It acts as a medium for the exchange of substances between blood vessels and cells, ensuring that cells receive necessary nutrients and oxygen while eliminating metabolic waste products. The side fluid is dynamic, constantly being produced and reabsorbed by the kidneys and other organs to maintain balance within the body's fluid environment.
