what is double circulation in heart?
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Answer:
The human circulatory system is a double circulatory system. It has two separate circuits and blood passes through the heart twice: the pulmonary circuit is between the heart and lungs. the systemic circuit is between the heart and the other organs.
Double circulation
The system of blood circulation common in mammals, in which blood passes through the heart twice, before going through the full body is known as Double Circulation.
In general terms it may be stated as one loop in which the blood carries oxygen (oxygenated blood) and the second loop in which it carries blood which has carbon dioxide in it (devoid of oxygen - deoxygenated blood).Blood is pumped from the heart to the lungs and returns back to the heart, for distribution to organs and tissues of the body.