Differentiate between the single circulatory system and the double circulatory system?
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A circulatory system in which blood travels only once through the heart in one complete cycle of the body is called single circulation. ... A circulatory system in which blood travels twice through the heart in one complete cycle of the body is called double circulation
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Arteries have thick and more muscular walls whereas veins have thin and less muscular walls.
Arteries have narrow lumen whereas veins have wide lumen.
Capillaries allow inward diffusion of carbon dioxide and outward diffusion of oxygen.
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