What do you notice about the width of an artery wall versus the width of a vein wall?

Artery walls are generally thicker than vein walls, which is primarily due to the higher pressure of blood that arteries must withstand as it is pumped from the heart. Arteries have more muscular and elastic tissue to maintain this pressure and regulate blood flow. In contrast, veins have thinner walls and larger lumens, as they operate under lower pressure and often rely on surrounding muscles and valves to assist in returning blood to the heart.