Which Vessel Plays a Key Role in Regulating Blood Flow

Question

Which vessel plays a key role in regulating blood flow into capillaries?
A) arteries
B) arterioles
C) venules
D) veins
E) aorta

Accepted Answer

Arterioles are small blood vessels that lead to capillaries and play a crucial role in regulating blood flow and pressure by constricting or dilating.