👉 The beside fluid, also known as interstitial fluid, is a type of fluid that exists between cells and the extracellular matrix in the body. It fills the spaces between cells, including the gaps between cells and within the spaces between tissues. This fluid plays a crucial role in maintaining cellular function by transporting nutrients, oxygen, and waste products, as well as helping to remove metabolic waste. It also contributes to the overall homeostasis of tissues and organs, supporting cellular communication and maintaining the structural integrity of tissues.