Which statement is correct for vascular resistance?

Question

Quizplus · Accepted Answer

Vascular resistance is the measurement of the amount of resistance that blood vessels provide to the blood flow. It is caused by friction between the moving fluid and stationary vascular walls. The resistance increases with the narrowing of the blood vessel because of the increased friction between blood and the vessel wall. It is directly proportional to the vessel length and blood viscosity, and inversely proportional to the fourth power of the vessel radius.

Which Statement Is Correct for Vascular Resistance