Question

What is double circulation? Explain its importance. at least 3 points

Answer 1

hey buddy here your answer;

⭕ human being hurt performs double circulation because heart pump the blood in 2 times at every circulation.
4 heart beat indicate one circulation of blood.

☺ Hope this helps you deaR ✌



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Answer 2

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.
In a double circulatory system there are two circuits for blood passing through the heart: Pulmonary Circulation
Deoxygenated blood is pumped from the heart to the lungs, oxygenated blood returns to the heart from the lungs.Systemic Circulation
Oxygenated blood is pumped from the heart around the body (including all the organs). That blood returns to the heart deoxygenated (more accurately 'oxygen poor') because much of the oxygen it contained when it left the heart has been supplied to tissues in the body. In animals that have double circulation (blood circulation) systems, the animal's heart has more than two chambers