It is vital that you remember the differences between tissue fluid, plasma and lymph:
Tissue fluid bathes and surrounds the body cells and allows the exchange of materials between the cells and the blood.
Plasma is a pale yellow fluid, about 90% water, that contains food molecules, waste products, ions, hormones and plasma proteins.
Lymph is the excess tissue fluid that drains into the lymph capillaries instead of re-entering the blood capillary.
HOW IS TISSUE FLUID FORMED?
1. In the arterial end of a capillary, there is a high blood pressure.
2. This high hydrostatic pressure forces water…