Blood flow through the heart in order
De oxygenated blood from the superior & inferior vena cava empties into the R atrium 2. Through the tricuspid valve 3. Into R ventricle 4 Through pulmonary semi-lunar valve 5. Pulmonary artery (unique* carries de-oxygenated blood) 6. Lungs 7. Pulmonary veins (unique* carries oxygenated blood) 8. L atrium 9. Through bicuspid valve/mitral valve 10. L ventricle 11. Through Aortic semi lunar valve 12. Aorta