Arteries-carry blood away from the heart. (I like to think Arteries Away.) Veins-carry blood to the heart. Capillaries-connect veins and arteries. Arteries are the tubes o … r vessles which carry the blood away from the heart once the blood has been oxygenated by the lungs.tructural similarities between artries and veins are 1) The walls of arteries and veins both contain collagen which makes them strong and durable. 2) They both contain elasti … c fibres which allow them to stretch and recoil.