Question

multiple choice question
what is the most important mechanism by which materials are transported between capillary blood and tissue fluid?
filtration
diffusion
osmosis

Explanation:

Diffusion is the main process for the exchange of oxygen, carbon - dioxide, nutrients, and waste products between capillary blood and tissue fluid. It occurs due to concentration gradients. Filtration is more related to fluid movement based on hydrostatic pressure differences, and osmosis mainly pertains to water movement across a semi - permeable membrane due to solute concentration differences.

Answer:

B. Diffusion