Final answer:
Extracellular Fluid, or ECF, refers to the fluid exterior to cells and includes the interstitial fluid, blood plasma, and fluid found in other reservoirs in the body. It plays a crucial role in maintaining the balance and homeostasis within the body.
Step-by-step explanation:
Extracellular Fluid, or ECF, refers to the fluid exterior to cells. It includes the interstitial fluid, blood plasma, and fluid found in other reservoirs in the body. The ECF makes up about one-third of the body's water content.
The interstitial fluid (IF) is part of the ECF that is found between cells. It allows for the transport of gases, nutrients, and waste materials between cells and the plasma in capillaries.
The ECF is vital for maintaining osmotic balance, electrolyte concentrations, and overall homeostasis in the body.