A typical arteriole has a diameter of 0.030 mm and carries blood at the rate of 5.5×10?6cm3/s.
What is the speed of the blood in an arteriole?
Suppose an arteriole branches into 340 capillaries, each with a diameter of 4.0×10?6m. What is the blood speed in the capillaries? (The low speed in capillaries is beneficial; it promotes the diffusion of materials to and from the blood.)