What fluid surrounds the cells in the tissues?

The fluid that surrounds the cells in the tissues is known as interstitial fluid. This fluid is found in the spaces between cells within tissues and serves several important functions, including the transportation of nutrients, waste products, and signaling molecules. Interstitial fluid helps maintain an appropriate environment for cell function and supports cellular activities by facilitating the exchange of substances between blood vessels and cells.

In contrast, intravascular fluid refers to the liquid found within blood vessels, playing a crucial role in transporting blood and nutrients throughout the body. Intracellular fluid is the fluid contained within the cells themselves, which is vital for various biochemical processes. Extracellular fluid encompasses all body fluids outside the cells, including both interstitial fluid and intravascular fluid, but when specifying the fluid specifically surrounding the individual cells in the tissues, interstitial fluid is the correct term.