Put the pattern of circulation into the correct order, beginning with the pulmonary circulation. Rank the options below. Blood enters the pulmonary veins. Blood enters the left side of the heart. Blood enters the systemic arteries. Blood leaves the right side of the heart. Blood enters the pulmonary arteries and travels to the lungs. Blood delivers oxygen to the tissues, and then enters systemic veins. Prev 1 of 10 Next