Deoxygenated blood enters the right atrium via the , vena cava, Blood is pushed through the tricuspid valve, Blood enters the right ventricle, Blood is pushed through the semi-lunar valve at base of pulmonary artery, Blood leaves the heart via the, pulmonary artery, Oxygenated blood returns to the left side of the heart via the, Pulmonary vein, enters the left atrium, Blood moves through the bicuspid valve, Blood enters the left ventricle, Blood is pushed through a semi lunar valve at the base of the aorta, Blood leaves the heart via the aorta.

Cardiac cycle - flow of blood through the heart

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