List four function of human heart why is double circulation necessary in the human body
Answers
Answer:
Since, in one complete cycle blood is passed twice through the heart so it is called as double circulation. Importance of double circulation: The separation of oxygenated and deoxygenated blood allows efficient supply of oxygen to the body cells. This also helps to maintain constant body temperature in human beings.
Answer:In mammal and birds the blood goes through the heart twice during each cycle. This is known as double circulation.
Explanation: Deoxygenated blood which enters right auricle and then it enters 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