👉 The outside fluid, also known as the interstitial fluid or extracellular fluid, is a vital component of biological systems, primarily found in the spaces between cells and within tissues. It fills the gaps between cells and the cell membranes, as well as surrounding the organs in larger systems like blood vessels and lymphatic channels. This fluid plays a crucial role in maintaining homeostasis by facilitating the transport of nutrients, oxygen, and waste products. It also provides a medium for cellular communication and supports the structural integrity of tissues by maintaining their shape and elasticity. The outside fluid is categorized into two main types: the interstitial fluid, which surrounds cells, and the lymphatic fluid, which is collected by lymph nodes and drains into the bloodstream.
