Small increases in blood vessel __________ can lead to big decreases in vessel resistance.

Question

Quizplus · Accepted Answer

The radius or diameter of a blood vessel has a significant impact on its resistance to blood flow. When the radius of a blood vessel decreases, its resistance to blood flow increases. Conversely, when the radius of a blood vessel increases, its resistance to blood flow decreases. This is due to the fact that as the radius of a blood vessel increases, the cross-sectional area of the vessel also increases, resulting in a decrease in blood velocity and therefore a decrease in resistance. Therefore, small increases in blood vessel radius can lead to big decreases in vessel resistance.

Small Increases in Blood Vessel __________ Can Lead to Big