Step 1, 1. Oxygenated blood exits the left ventricle of the heart, Step 2, Oxygenated blood is pumped through the aorta, Step 3, Blood with O2 is distributed all over the body, Step 4, Capillaries - gas exchange: O2 + nutrients --> CO2 + waste, Step 5, Deoxygenated blood returns through the vena cava, Step 6, Deoxygenated blood enters the heart through the right atrium, Step 7, Blood passes from the right atrium to the right ventricle

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