Question

Explain the double circulation of blood in human heart

Answer 1

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explain the double circulation of blood in human heart

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★ DOUBLE CIRCULATION ★

• deoxygenated blood from the body tissues is poured in to right atrium contraction of heart forces it into right ventricle deoxygenated blood flows to the lungs through pulmonary artery

• excited blood from lungs is return into left atrium and then into left ventricle the left ventricle forces the oxygenated blood to the whole body for making one complete round of circulation circuit around all body parts the blood passes through the heart twice

• the pathway of blood from heart to the lungs and back to the heart is called pulmonary circulation and the pathway of blood from the heart to the body and back to hurt is called system circulation

• this is known as double circulation of blood

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Answer 2

★ Answer :

In double circulation the oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body.

→ Disadvantages of double circulation :

• Double circulation is much more efficient than single.

• It is efficient in delivering oxygen throughout an organism.

→ Advantages of double circulation :

• There is separation of oxygenated and deoxygenated blood.

• Higher blood pressure is maintained.

• Double circulation gives the ability to create more pressure to pump blood round the whole body system.

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