What are the differences between arteries and veins ? Read on to find out about these blood vessels , plus other types, and how the cardiovascular system works. There are three different types of layers present in the artery those are highly muscular. Along with that, they are very rigid & relatively thicker. In the case of the vein , there are three different layers present but, those are thinner & relatively less muscular than the walls of the artery. Understanding the difference between arteries and veins is crucial when studying the human circulatory system. These blood vessels play essential roles in circulating blood throughout the body but differ widely in structure and function. In this guide, we will explore the arteries and veins in-depth, highlight the structural difference between arteries and veins , explain the function of artery and vein , and provide an easy-to-follow arteries and veins diagram to enhance your understanding ... Differentiate between arteries and veins . They carry blood away from the heart to all parts of the body. They carry oxygenated blood (except pulmonary artery). They are usually deep seated in the tissues. Blood flows with jerks and under high pressure. Valves are absent. Thick elastic walls present.