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InterviewSolution
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Diffrentiate between arteries, veins and capillaries. (3 mrks) |
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Answer» Arteries carry blood away from the heart to various organs of the body.Veins collect the blood from different organs and bring it back to the heart.Capillaries exchange of material between the blood and surrounding cells takes place across the thin walls of capillaries. Arteries - 1) Arteries are thicker than veins and cappilaries.2) They carry oxigenated blood except pulmonary artery.3) Valves are absent.Veins - 1)Veins are thin than artery but thick than capillary.2)They carry deoxgenated blood.3)Valves are present.Capillaries - 1)Capillaries are thinnest blood vessels.2)Capillaries carry oxygen and nutrients to the tissues.3)Valves are absent. |
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