Which statement about the mammalian circulatory system is correct?

Question

Which statement about the mammalian circulatory system is correct? (A) The average diameter of arteries is greater than that of veins. (B) The order of decreasing velocity of blood flow is arteries > capillaries > veins. (C) The total surface area of the capillaries is considerably greater than that of all of the arteries, arterioles, venules and veins combined. (D) The electrical activity that coordinates the heating of the heart originates in the atrio- ventricular node.

Tardigrade Admin · Accepted Answer

Correct answer is (c) The total surface area of the capillaries is considerably greater than that of all of the arteries, arterioles, venules and veins combined.

Q. Which statement about the mammalian circulatory system is correct?

The average diameter of arteries is greater than that of veins.

The order of decreasing velocity of blood flow is arteries > capillaries > veins.

The total surface area of the capillaries is considerably greater than that of all of the arteries, arterioles, venules and veins combined.

The electrical activity that coordinates the heating of the heart originates in the atrio- ventricular node.

Correct answer is (c) The total surface area of the capillaries is considerably greater than that of all of the arteries, arterioles, venules and veins combined.