Blood vessels 0.0 / 5 ? BiologyBlood vesselsIGCSEAQA Created by: elliebaxterCreated on: 26-01-17 22:40 Arteries carry oxygenated blood away from heart thick layers of muscle and elastic tissue small lumen 1 of 3 Veins Thinner walls than arteries Large lumen Often have valves to prevent backflow of blood 2 of 3 Capillaries Narrow, walls (1 cell thick) Narrow lumen Carry blood through the organs 3 of 3
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