Final answer:
Hydrostatic pressure from the aorta to the capillaries is higher than osmotic pressure at the arterial end, while osmotic pressure is higher at the venous end, determining the movement of water and solutes.
Step-by-step explanation:
Hydrostatic pressure refers to the pressure created by the pumping force of the heart that pushes water out of the capillaries. The balance between hydrostatic pressure and osmotic pressure determines the movement of water and solutes across the capillary walls. At the arterial end of the capillaries, hydrostatic pressure is higher than osmotic pressure, resulting in the net movement of water and solutes into the tissue fluid. At the venous end, osmotic pressure is higher, allowing substances to be passed back into the capillary.