Describe double circulation of blood in human beings. Why is it necessary?
Answers
In human body blood passes from heart twice time which is called double circulation.
Explanation:
It is necessary because during this process oxygenated and deoxgenated blood get seprate form each other which make circulatory system efficient.
Answer:
In mammals and birds the blood goes through the heart twice during each cycle. This is known as double circulation.
Deoxygenated blood which enters right auricle and then it enters the right ventricle from where it is pumped to lungs for oxygenation. From lungs after oxygenation it comes to left auricle and then enters left ventricle from where it is pumped to various parts of body.
Such system of circulation does not allow mixing of oxygenated and deoxygenated blood which allows efficient supply of oxygen to the body.