Explain the following:
Why is there no mixing of deoxygenated and oxygenated blood in the human heart normally?
There is no mixing of deoxygenated and oxygenated blood in the human heart because of double circulation of blood where the blood passes twice through the heart and the right half of the heart is concerned with pumping deoxygenated blood while the left is concerned with pumping of oxygenated blood.
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