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Heart Physiology

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What is the main function of the heart?

The main function of the heart is to pump oxygenated blood to the body's tissues and organs and to pump deoxygenated blood to the lungs for oxygenation.

Explain the physiology of the heart.

The physiology of the heart involves the contraction and relaxation of the cardiac muscle to pump blood throughout the body, regulated by electrical signals and the cardiac conduction system.

How is the heartbeat regulated?

The heartbeat is regulated by electrical signals from the sinoatrial node, which initiates the heartbeat, and the atrioventricular node, which coordinates the contractions of the atria and ventricles.