👉 The together fluid, also known as the interstitial fluid or extracellular fluid, is a vital component of the human body's circulatory system. It fills the spaces between cells and within the cavities of organs, making up about 90% of the body's total fluid volume. This fluid acts as a medium for the transport of nutrients, oxygen, hormones, and waste products between cells and organs, facilitating essential physiological processes. It also provides a cushioning effect that protects delicate tissues and maintains the structural integrity of organs, while playing a crucial role in maintaining homeostasis within the body.