Heart & Lungs Crossword

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Across
  1. 3. Small sac at the end of bronchial tubes
  2. 7. when oxygen and carbon dioxide are exchanged between blood cells and surrounding tissue cells
  3. 11. Muscle below your lungs that contracts and causes your chest to expand so you inhale
  4. 12. Eliminates germs to help prevent infection and disease
  5. 13. Tube leading to the lungs
  6. 16. throat
  7. 19. System made up of your lungs, responsible for breathing
  8. 22. when gases are exchanged within a cell
  9. 23. similar to identification tags in a cell
Down
  1. 1. the exchange of oxygen and carbon dioxide
  2. 2. These stick together to close a cut
  3. 4. Carries blood toward the heart
  4. 5. Connects veins and arteries
  5. 6. A yellowish liquid that carries blood cells through the blood vessels
  6. 8. System made up of your heart, blood, and blood vessels, transports blood throughout your body
  7. 9. the exchange of oxygen for carbon dioxide in the lungs
  8. 10. Tiny hairs that sweep particles out of the bronchi into the esophagus
  9. 14. Carries oxygen and nutrients to cells and carries away waste products
  10. 15. A stringy substance that forms a web over cuts
  11. 17. Major artery of the heart
  12. 18. Carries blood away from the heart
  13. 20. vocal cords
  14. 21. Two tubes that enter the lungs