explain the course of circulation of blood through the heart in human beings.why is it known as double circulation?answer in brief.
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Answer:
the blood from the body returns again to the heart and pumps it back this is why its is also called as double circulation
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Explanation:
the passage of blood twice through the heart to complete a respiration cycle is known as double circulation
it is due to separate oxygenated blood from deoxygenated blood
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