Which of the following is the most significant source of blood flow resistance?

Question

Quizplus · Accepted Answer

Blood vessel diameter is the most significant source of blood flow resistance. This is known as the Poiseuille's law, which states that resistance to blood flow is directly proportional to the length of the blood vessel and the viscosity of the blood, and inversely proportional to the fourth power of the radius of the blood vessel. Therefore, a small change in blood vessel diameter can have a significant impact on blood flow resistance.

Which of the Following Is the Most Significant Source of Blood