Resistance to Blood Flow is Regulated Primarily by What Blood

Question

Resistance to blood flow is regulated primarily by what blood vessels?
A) capillaries
B) ventricle
C) arterioles
D) arteries
E) veins

Accepted Answer

Arterioles are the primary site of vascular resistance in the circulatory system. They regulate blood flow through their ability to constrict and dilate, thus controlling the blood flow to various tissues and organs.