Question

(04.01H MC) This is a microscopic image of the walls of arteries and veins. The vein walls are collapsed in comparison to the artery walls. © 2014 Custom Medical Stock Photo Which statement accurately describes the tissues labeled in the microscopic image? The muscle tissues of arteries are thicker than the muscle tissues of veins The muscle tissues of veins are denser than the muscle tissues of arteries There is more elastin in veins than in the tissues of arteries The valves of veins make them more flexible than arteries