Put the stages of circulation in order by matching each stage with it number order. Begin with "first" and end with "last." 1. blood enters the right atrium third
2. blood passes into the right ventricle second
3. the pulmonary artery carries blood to the lungs first
4. the pulmonary vein carries blood to the heart fifth
5. blood passes into the left ventricle last
6. the aorta pumps blood to the body fourth