👉 The segment fluid, also known as the segmental fluid or interstitial fluid, is a vital component of the body's circulatory system, specifically within the extracellular space between cells. It fills the spaces between cells and within the cavities of organs, forming a continuous fluid that facilitates the exchange of nutrients, gases, and waste products. This fluid is crucial for maintaining homeostasis, supporting cellular metabolism, and ensuring proper organ function. It also plays a role in immune response by transporting immune cells and facilitating the movement of substances necessary for fighting infections. The segment fluid is distinct from blood plasma, which circulates within blood vessels, and it contributes significantly to the body's overall fluid balance.
