An Increased Concentration of Nitric Oxide Within a Vascular Bed

Question

An increased concentration of nitric oxide within a vascular bed is associated with
A) vasoconstriction.
B) vasodilation.
C) narrowing of the arteries.
D) a reduction in blood flow in that region.
E) a decreased amount of blood in the capillaries of that vascular bed.

Accepted Answer

Nitric oxide is a potent vasodilator, meaning it causes relaxation of smooth muscle within vascular walls, ultimately leading to an increase in blood flow to that region.