Which blood vessels contribute most significantly to the overall peripheral resistance?

Show Answers

Small veins (venules)Small arteries (arterioles)Microscopic blood vessels (capillaries)Sphincters located before capillaries

Explanation

Arterioles play the primary role in regulating total peripheral resistance due to their muscular walls that can constrict or dilate, thereby controlling blood flow and pressure. Venules, capillaries, and precapillary sphincters have a lesser impact on peripheral resistance compared to arterioles.