Question

Describe double circulation in human beings.Why it is necessary ?

Answer 1

The majority of mammals (including humans) utilize a double circulatory system. This means we have two loops in our body in which blood circulates. One is oxygenated, meaning oxygen rich, and the other is deoxygenated, which means it has little to no oxygen, but a lot of carbon dioxide.

Double circulatory systems are important because they ensure that we are giving our tissues and muscles blood full of oxygen, instead of a mixture of oxygenated and deoxygenated blood. While it may take a bit more energy than a single circulatory system, this system is much more efficient.

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Answer 2

Double Circulation Of Blood Is:

When blood passes twice through our heart in a single cycle when our heart beats once this is called as double circulation of blood.

The need for Double Circulation of Blood:

• This is very necessary for us humans as we are warm blooded animals we need to maintain our body temperature constantly. Double circulation of blood helps us maintain a constant body temperature.

• It is also helps in efficiency of the circulatory system because it helps in   separating oxygenated and de oxygenated blood. This makes the circulatory system more efficient.