MICROANATOMY

Detailed explanation-1: -Fluid found in the spaces around cells. It comes from substances that leak out of blood capillaries (the smallest type of blood vessel). It helps bring oxygen and nutrients to cells and to remove waste products from them.

Detailed explanation-2: -It is derived from blood plasma as fluids pass through capillary walls at the arterial end. As the interstitial fluid begins to accumulate, it is picked up and removed by tiny lymphatic vessels and returned to the blood. As soon as the interstitial fluid enters the lymph capillaries, it is called lymph.

Detailed explanation-3: -So, interstitial fluid is a type of ECF as it is found outside the interstitial cells. It is also known as intercellular or tissue fluid.

Detailed explanation-4: -Water that is found in the space between cells and blood vessels is called: Interstitial.