Which factor influences resistance to blood flow?

Question

Quizplus · Accepted Answer

Blood viscosity (A) and muscle tension in blood vessel walls (C) both contribute to resistance to blood flow. Higher viscosity or thicker blood will lead to more friction between blood cells and the vessel walls, increasing resistance. Constriction of blood vessels due to muscle tension will also cause an increase in resistance, as less blood can pass through a narrowed space. Blood volume (B) can affect blood pressure, but not resistance to flow.

Which Factor Influences Resistance to Blood Flow