What is double circulation?
1 Answer
In double circulation, there are two loops or cicuits where the blood travels to the heart - systemic and pulmonary.
Explanation:
In other words the blood flows through the heart twice. Double circulation is important to ensure a supply of pure oxygenated blood to tissues and muscles instead of a mix of oxygenated and deoxygenated blood.
In this circulation, the heart consists of the right side that pumps deoxygenated blood into the pulmonary section and the left side that pumps deoxygenated blood into the systemic circulation.
Systemic Circulations: starts from left atrium to left ventricle. This transfers the oxygen rich blood to aorta for the supply to various parts of the body.
Pulmonary Circulation: the pulmonary artery collects the blood from right ventricle and passes to lungs for oxygenation. Lungs purify this supply of deoxygenated blood, then the blood is pumped back to left atrium of the heart.
Thus it ensures the high supply of oxygen.
Double circulation is common among mammals and birds.
