Which of the following is a difference between arteries and veins? A. artery walls have more elastic tissue and smooth muscle than veins. B. veins have three distinct “tunics” in their walls whereas arteries have only two. C. blood flow in veins is pulsatile while that is arteries is continuous. D. the walls of veins have more elastic tissue and smooth muscle than in arteries.
Option A. The walls of arteries are thicker than the walls of veins due to arteries having extra smooth muscle and elastic tissue.
