Comparison of Artery and Vein

A side-by-side vascular comparison highlights the structural differences between arteries and veins. Thick muscular walls, narrow lumens, and elastic layers are shown in arteries, while veins appear thinner with wider lumens and valves to prevent backflow. Blood pressure and flow direction are often labeled to reinforce functional differences. Seeing both vessels together makes it easier to understand circulation efficiency and why veins rely on muscle movement to return blood to the heart.