Double circulation

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Human heart have four chambers 2 upper chambers called atria and 2 lower called ventricles

The right part of the heart is concerned with venous blood and left part with the oxygenated blood. In one complete circuit in the body the blood passes twice through the heart, once through its right side and then through its left side.

This type of bi-circulation of blood is known as double circulation. The complete separation of ventricles into two chambers enables the venous and oxygenated blood not to mix. However, the circulation of blood in the body parts from the heart can be represented as given below.

Oxygenated blood – left auricle – left ventricle – carotico systemic aorta – arteries – arterioles – and arterial capillaries – organs – venous capillaries and venules (venous blood) – veins – precavals and postcaval – right auricle – right ventricle – pulmonary aorta – pulmonary aorta – pulmontary arteries – lungs (for purification) – pulmonary veins – left auricle (oxygenated blood).

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Double circulation system refers to the system in which blood pumps through the heart twice during each trip around the body. The blood is first pumped into the lungs where it is oxygenated and is tgen pumped back to the heart before it is finally pumped into the rest of the body.
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The process by which blood pumps through the heart twice for purification is known as double circulation
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Definition
A type of?blood?circulation system in which the blood flows through the?heart?twice. In this type of circulation, the?pulmonary circulation?is separate from the?systemic circulation.


Supplement

In this circulation, the?heart?consists of: the right side that pumps deoxygenated blood into the pulmonary section and the left side that pumps oxygenated blood into the?systemic circulation.?This is common amongmammals?and?birds. This is in contrast to?animals?that have only one circulation system such as?fish.
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