Which statement accurately compares filtration and reabsorption?
A. Filtration involves bulk flow of fluid out of the blood, whereas reabsorption is bulk flow back into the blood.
B. The direction of filtration can be either into or out of the blood, but reabsorption always involves fluids entering the blood.
C. Filtration happens at the venule end of a capillary bed and reabsorption happens in feeder arterioles.
D. Filtration is driven by concentration gradients, whereas reabsorption depends on hydrostatic pressure.
Answer: A
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