extracellular fluid

Extracellular fluid (ECF) refers to all the fluid outside of cells within the body. It includes blood plasma, lymph, and the fluid found in tissues. ECF plays a crucial role in transporting nutrients, waste products, and signaling molecules between cells and their environment. It helps maintain the balance of water and electrolytes, which is vital for normal bodily functions. Essentially, ECF acts as a medium through which cells communicate and exchange substances, supporting overall health and homeostasis.