This article will help you to differentiate among artery, vein and capillary. Difference # Artery: 1. Carry blood away from heart. 2. Outer coat is thin middle coat is thick. 3. Lumen is small. 4. Pure oxygenated blood is passed except pulmonary artery. 5. Semilunar valves are absent. 6. Press of blood is high. 7. […]