Question

Explain in brief the mechanism of circulation of blood in the human body with diagram.​

Answer 1

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Blood circulation starts when the heart relaxes between two heartbeats: The blood flows from both atria (the upper two chambers of the heart) into the ventricles (the lower two chambers), which then expand. In the systemic circulation, the left ventricle pumps oxygen-rich blood into the main artery (aorta).

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Answer 2

Blood circulation starts when the heart relaxes between two heartbeats: The blood flows from both atria (the upper two chambers of the heart) into the ventricles (the lower two chambers), which then expand. In the systemic circulation, the left ventricle pumps oxygen-rich blood into the main artery (aorta).