Across
- 1. Oxygen comes in through here and carbon dioxide goes out.
- 6. Carries deoxygenated blood to the heart.
- 7. The left upper cavity of the heart.
- 9. The wall separating the two chambers in the heart.
- 10. The left lower cavity of the heart.
- 13. The valve located between the right ventricle and the pulmonary artery.
- 15. The valve located between the Aorta and left ventricle.
- 16. The right lower cavity of the heart.
- 18. A large vein that carries deoxygenated blood to the heart.
- 19. The valve located between the left atria and ventricle.
- 20. Controls the heart rate.
Down
- 2. The heart's natural pace maker.
- 3. The valve located between the right atria and ventricle.
- 4. The right upper cavity of the heart.
- 5. Carries oxygenated blood to the rest of the body.
- 8. The tiniest blood vessels.
- 11. Tendons that connect the tricuspid valve and the bicuspid valve.
- 12. A large vein that carries deoxygenated blood to the heart.
- 14. A protein on red blood cells that carries oxygen.
- 17. The main artery of the body.