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Blood is pumped into the pulmonary arteries in the lungs from the right ventricle after entering the right atrium from the body forCirculation.Twenty one steps involved in Circulation:1. Superior/Inferior Vena Cava2. R Atrium3. Tricuspid Valve4. R Ventricle5. Pulmonary Valve6. Pulmonary Arteries7. Pulmonary Arterioles8.PulmonaryCapillaries9. Pulmonary Venules10. Pulmonary Veins11. L Atrium12. Mitral Valve13. L Ventricle14. Aortic Valve15. Aorta16. Systemic Arteries17. Systemic Arterioles18. Systemic Capillaries19. Systemic Venules20. Systemic Veins21. Superior/Inferior Vena CavaAfter absorbingoxygen, blood returns to the heart through the pulmonary veins, passing through the left atrium, left ventricle, and aorta before leaving the body through the tissues.Learn more aboutCirculationVisit:brainly.com/question/20710128#SPJ4...