Central control of vasomotor tone has its greatest impact on which of the following vessels?
I.arterioles (resistance vessels)
II.veins (capacitance vessels)
III.microcirculation (exchange vessels)

Question

Quizplus · Accepted Answer

Central control of vasomotor tone has its greatest impact on arterioles (resistance vessels) and veins (capacitance vessels). Arterioles are the main resistance vessels in the circulation, and constriction or dilation of arterioles can strongly affect blood flow and blood pressure. Veins, on the other hand, are capacitance vessels that can store blood when they are dilated or return blood to the heart when they are constricted. Therefore, central control of vasomotor tone can regulate both blood flow and blood volume through the arterioles and veins, respectively. Microcirculation (exchange vessels) refers to small capillaries where exchange of nutrients, gases, and waste products occurs between the blood and the surrounding tissues, and central control of vasomotor tone has relatively less impact on these vessels.

Central Control of Vasomotor Tone Has Its Greatest Impact on Which