1) Step 1 a) Blood travels through aorta. b) Blood enters right ventricle. c) Blood enters right atrium. d) Blood enters through the superior and inferior cava veins. 2) Step 2 a) Blood travels through pulmonary artery to the lungs. b) Blood becomes deoxygenated c) Blood travels through arteries.   d) Blood travels into right atrium. 3) Step 3 a) Blood exchanges oxygen for carbon dioxide b) Blood travels through arteries.   c) Blood travels into left ventricle. d) Blood travels into right ventricle. 4) Step 4 a) Blood travels through pulmonary artery to the lungs. b) Blood travels into left atrium. c) Blood enters through superior and Inferior vena cava vein.  d) Blood travels into left ventricle. 5) Step 5 a) Blood travels into left ventricle. b) In the lungs, blood exchanges carbon dioxide for oxygen. c) Blood enters through superior and inferior vena cava vein.  d) Blood travels through aorta. 6) Step 6 a) Blood travels into right ventricle. b) Blood travels into lungs.  c) Blood travels through pulmonary artery to the lungs. d) Blood travels into left atrium. 7) Step 7 a) Blood travels into aorta. b) Blood travels into right ventricle. c) Blood travels into left ventricle d) Blood travels into lungs.  8) Step 8 a) Blood travels from pulmonary artery to the lungs. b) Blood travels into lungs. c) Blood is pushed from aorta into the rest of the body. d) Blood travels into the heart through the superior and Inferior vena cava vein.  9) Step 9 a) Blood travels into left atrium. b) Blood travels through arteries to different parts of the body. c) Blood travels into lungs.  d) Exchange of oxygen for carbon dioxide 10) Step 10 a) The blood exchanges oxygen for carbon dioxide b) Blood travels into right atrium. c) Blood travels from pulmonary artery to the lungs. d) Blood travels into the aorta. 11) Step 11 a) Blood travels into the left ventricle. b) Blood travels from pulmonary artery to the lungs. c) Blood travels into the left atrium. d) After becoming filled with carbon dioxide, the blood becomes deoxygenated

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