1.

Why is double circulation necessary in the human body ? List two functions of the human heart.

Answer»

double circulation is necessary in human beings because oxygenated and deoxygenated blood does not mix with each other functions of human heart first it transports many substances to the body II it is a pumping organ

Double circulationhelps to keep oxygenated and deoxygenated blood from mixing. Such separation allows a highly efficient supply of oxygen to thebody.

The main function of the heart is to pump the blood to all parts of body and the flowing of blood helps in taking the deoxygenated blood from all parts and then provide them oxygenated blood by the pumping of heart.



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