👉 The lower fluid, also known as the interstitial fluid, is a vital component of the body's internal environment. It fills the spaces between cells and within the cavities of tissues, playing a crucial role in nutrient transport, waste removal, and maintaining cellular function. This fluid acts as a medium for the exchange of substances between blood vessels and cells, ensuring that cells receive the necessary nutrients and oxygen while expelling metabolic waste products. The lower fluid is distinct from the blood plasma, which circulates within blood vessels, and it contributes to the overall homeostasis of bodily functions by facilitating communication and transport at the cellular level.
