Differences between arteries, capillaries and veins SPM Biology Form 5 Chapter 1 0.0 / 5 ? BiologyCirculationGCSEOCR Created by: Iffah Ahmad-JailaniCreated on: 17-01-15 10:51 Arteries Transport bloody away from the heart Transport oxygenated blood (except the pulmonary artery) Thick muscular wall No valves except semilunar valves at the base of the aorta and pulmonary artery Blood flows in pulses under high pressure 1 of 3 Capillaries Connect arterioles to venules Act as the sites for exchange of substances with the cells Thinnest wall, one cell in thickness No valves No pulses. Pressure lower than arteries but higher than veins 2 of 3 Veins Transport blood to the heart Transport deoxygenated blood (except the pulmonary vein) Thinner wall Valves present to prevent backflow of blood No pulses. Blood flows under lower pressure than arteries 3 of 3
Bio 3 - Transportation of Substances around the Body - The circulatory system 4.5 / 5 based on 4 ratings
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