👉 The retired fluid, also known as the interstitial fluid, is a vital component of the body's internal environment that circulates between the cells and the extracellular matrix. Unlike blood plasma, which is confined within blood vessels, the retired fluid fills the spaces between cells and within the cavities of tissues, facilitating the exchange of nutrients, waste products, and signaling molecules. This fluid plays a crucial role in maintaining cellular health and function by providing a medium for diffusion and supporting the transport of various substances. Over time, as the body ages or under certain pathological conditions, the composition and volume of the retired fluid can change, impacting overall physiological processes.
