respiratory system

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Across
  1. 2. passageway leading from the trachea to a lung
  2. 3. breathing out
  3. 7. structure in the throat that containing the vocal cords
  4. 8. artery: carries blood from the right side of the heart to the lungs
  5. 11. disease in in which the tissues of the lungs loses elasticity making breathing very difficult
  6. 12. stimulant drug in tobacco that that increases heart rate
  7. 14. : breathing in
  8. 15. vein: carries blood from the left side of the heart to the lungs
  9. 18. air passages in the lungs
  10. 20. a small moveable lid that stops fluid from entering the airways
Down
  1. 1. muscular tube at the end of the gastrovascular
  2. 4. tiny air sacs at the end of the bronchiole
  3. 5. larger flat muscle at the bottom of the chest cavity
  4. 6. a way in which tobacco enters the respiratory system
  5. 9. small opening used to breath
  6. 10. diseases: diseases in the respiratory system
  7. 13. : windpipe ,tube through which air moves
  8. 16. cancer:
  9. 17. large opening in with air in thers the body
  10. 19. main organs used to breath