Pressures occurring at capillary beds lead to filtration and re-absorption of fluid between the tissue fluid and blood in the capillaries. A result of these pressures is an increase in tissue fluid because filtration exceeds reabsorption
Explanation:
The movement of water and solute from blood to the tissue fluid through the capillary wall is called filtration. The movement of water and wastes from the tissue to the blood through capillary wall is termed as re-absorption.
Both filtration and re-absorption are driven by hydro-static pressure on the capillary walls .
When the rate of filtration is more than re-absorption, amount of water and solutes moving into the tissue will exceed the amount of water lost from the tissue. So the amount of tissue fluid will increase.
