Explain how flow through a blood vessel is determined. Explainwhat a “pressure difference†is and why it matters to flow. Defineresistance and explain how resistance affects flow. List anddiscuss the 3 factors which influence the resistance throughvessels. For each factor explain the mechanism by which it affectsresistance. Which one of these 3 as the largest impact onresistance? Explain why it has the largest impact on flow. Whichone of these 3 can readily be adjusted by the body?
