Final answer:
Hydrostatic pressure in a capillary bed is exerted by fluid in an enclosed space and decreases from the arteriole to the venous end. Osmotic pressure draws fluid back into the capillaries and is influenced by solute-to-water concentrations. The net filtration pressure is determined by the interaction between hydrostatic and osmotic pressures.
Step-by-step explanation:
The hydrostatic pressure in a capillary bed corresponds to the pressure exerted by fluid in an enclosed space. This pressure is highest at the arteriole end of the capillary bed and decreases as the blood moves through the capillary, reaching its lowest point at the venous end.
On the other hand, osmotic pressure draws fluid back into the capillaries and is determined by the solute-to-water concentrations. The net filtration pressure in a capillary bed is the result of the interaction between the hydrostatic and osmotic pressures.