_______ is an Increase in Blood Vessel Diameter That Decreases

Question

_______ is an increase in blood vessel diameter that decreases resistance to blood flow.
A) Vasodilation
B) Blood pressure
C) Vasoconstriction
D) Viscosity

Accepted Answer

Vasodilation is the process by which blood vessels increase in diameter, resulting in decreased resistance to blood flow. This can lead to increased blood flow and increased delivery of oxygen and nutrients to tissues. Vasodilation can be caused by various factors, including relaxation of smooth muscle in blood vessel walls, release of certain chemicals or hormones, and decreased sympathetic nervous system activity.