Question

describe double circulation of blood in human beings why is it necessary​

Answer 1

Answer:

$\huge\underline\pink{\tt Hey\:Mate}$

$\huge\underline\green{\tt Double\:Circulatory\: system }$

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.

$\huge\underline\green{\tt Why\:its\:necessary}$

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

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Answer 2

$\huge\star{\blue{\underline{\underline{\mathfrak{Explanation:}}}}}$

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Double circulation means, in a single cycle blood goes twice in the heart. The process helps in separating oxygenated and deoxygenated blood to maintain a constant body temperature.

The double circulatory system of blood includes

• Pulmonary circulation
• Systemic circulation.

$\large{\tt{\pink{\underline{Pulmonary\: circulation.}}}}$

$\leadsto$The right ventricle pumps deoxygenated blood into the lungs where it is oxygenated. The oxygenated blood is brought back to the left atrium, from there it is pumped into the left ventricle and finally blood goes into the aorta for systemic circulation.

$\large{\tt{\pink{\underline{Systemic\:circulation}}}}$

$\leadsto$The oxygenated blood is pumped to various parts of the body from the left ventricle. The deoxygenated blood from different parts of the body passes through vena cava to reach right atrium. The right atrium transfers the blood into right ventricle.