Heart and Blood Vessels

Describe the structure and function of the human heart and lungs.

Explain the double circulatory system and the role of the right and left ventricles.

Identify key blood vessels: aorta, vena cava, pulmonary artery, pulmonary vein, and coronary arteries.

Explain the role of the natural pacemaker and artificial pacemakers.

Relate the structure of arteries, veins, and capillaries to their functions.

Calculate the rate of blood flow.