Question

Describe the two circulations involved in Double circulation in brief.

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Answer 1

Answer:

Double circulation:: The blood flows twice through the heart and it is called double circulation. ... 2)The oxygenated blood from lungs is brought to left auricle which pumps it into left ventricle. From the left ventricle oxygenated blood is distributed to all parts of the body through largest artery called aorta.

Answer 2

Double circulation involves two circulations. They are:-

• Systemic Circulation.
• Pulmonary Circulation.

1. Systemic Circulation - In this, blood completes its circulation from left ventricle to right auricle through the body organs. Here, the left ventricle pumps oxygenated blood into systemic aorta which supplies it to body organs other than the lungs through a number of arteries. Deoxygenated blood from these organs is returned to the right auricle through great veins. Right auricle pumps deoxygenated blood in the right ventricle.
2. Pulmonary Circulation - In this, blood completes its circulation from right ventricle to left auricle through the lungs. Here, the right ventricle pumps deoxygenated blood into pulmonary arch which supplies it to the lungs through the pulmonary arteries. In the lung alveoli, oxygenation of blood takes place. Oxygenated blood from the lungs is returned to left auricle by pulmonary veins. Left auricle pumps the oxygenated blood to left ventricle.