They transport deoxygenated blood They transport oxygenated blood from from body tissues to the heart except the heart to the body tissues except the the pulmonary vein which transports pulmonary artery which transports oxygenated blood from the lungs to deoxygenated blood from the heart to the heart the lungs Characteristics of capillaries; They are tiny, very thin walled and penetrate deep into every organ They are permeable and some blood components and other materials leak through them The exchange of materials between blood and tissues take place through their walls They do not have muscular walls They do not have an elastic tissue They have a very large lumen in relative to their diameter They are not capable of constriction They link arteries to veins through arterioles and venules Blood flows slowly and there are no pulses They do not have valves Similarities between Veins, arteries and capillaries All are tubular All have endothelium/in lining All transport blood Diagram illustrating the arteries and veins which transport blood to the different organs of the body
They transport deoxygenated blood from body tissues to the heart except the pulmonary vein which transports oxygenated blood from the lungs to the heart They transport oxygenated blood from the heart to the body tissues except the pulmonary artery which transports deoxygenated blood from the heart to the lungs Characteristics of capillaries; They are tiny, very thin walled and penetrate deep into every organ They are permeable and some blood components and other materials leak through them The exchange of materials between blood and tissues take place through their walls They do not have muscular walls They do not have an elastic tissue They have a very large lumen in relative to their diameter They are not capable of constriction They link arteries to veins through arterioles and venules Blood flows slowly and there are no pulses They do not have valves Similarities between Veins, arteries and capillaries All are tubular All have endothelium/in lining All transport blood Diagram illustrating the arteries and veins which transport blood to the different organs of the body