Question

Define double circulation in human being.

Answer 1

Hi my dear friend,

Ans. During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

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Answer 2

double circulation in human beings means that the blood goes to the heart twice.