In which of the following would the rate of blood flow be greatest, assuming the same pressure?

Question

Quizplus · Accepted Answer

According to Poiseuille's law, the flow rate of a fluid through a tube is directly proportional to the fourth power of the radius of the tube. Therefore, a smaller diameter will create a greater resistance to flow and lower flow rate. A vessel with a 10-micron diameter (A) will have the greatest resistance and lowest flow rate, while a vessel with a 1 cm diameter (C) will have the lowest resistance and greatest flow rate. However, since the question assumes the same pressure, the only factor affecting flow rate is the diameter of the vessel, making A the correct choice.

In Which of the Following Would the Rate of Blood