Question

Which of the following is correct for the major function of the arterioles?
a. they regulate heart rate.
b. they serve as a pressure reservoir
c. they distribute cardiac output to large blood vessels
d. they regulate the flow of blood through capillary beds.

Answer 1

Answer:

The correct answer is B

Explanation:

Arteriolls regulate peripheral vascular resistance. Blood pressure is defined by cardiac output and peripheral vascular resistance, therefore these vessels have the ability to modify their caliber to maintain adequate blood pressure levels.