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In double circulation there is complete segregation of oxygenated and deoxygenated blood. Because of this the blood passes twice through the heart in one cycle of circulation hence the name double circulation. This is necessary for optimum oxygen utilization as humans are warm blooded animals and need extra energy to maintain their body temperature

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Waldo Ledner

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2y ago

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What are the 2 circuits that make up human double circulation system?

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