Question Detail
Question
The protein-free filtrate passes out of capillaries under which force?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The protein-free filtrate passes out of capillaries under hydrostatic pressure. Blood pressure within the capillaries forces fluid and small solutes through the capillary walls, while larger proteins remain in the blood due to their size and osmotic pressure.
Hint
This pressure is generated by the pumping action of the heart and drives filtration at capillary beds.