tissue fluid

Question 1

tissue fluid formation

Answer 1

The volume of liquid that leaves the plasma to form tissue fluid depends on two opposing forces
Hydrostatic pressure
This is the pressure exerted by a fluid, e.g. blood
The hydrostatic pressure in this example is the blood pressure, generated by the contraction of the heart muscle
Oncotic pressure
This is the osmotic pressure exerted by plasma proteins within a blood vessel
Plasma proteins lower the water potential within the blood vessel, causing water to move into the blood vessel by osmosis