Respiratory system

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Across
  1. 3. uncontrolled growth of tumors
  2. 4. maximum amount of air a person can expel
  3. 7. contains vocal cords
  4. 10. branching airways
  5. 12. preventing the exchange of gases
  6. 13. causing the lungs to lose their elasticity
  7. 14. filters,and moistens air
  8. 18. passage way for food and air
  9. 19. air that remains after exhaling
  10. 20. very tiny blood vessels
Down
  1. 1. inflammation of the bronchioles
  2. 2. where the lungs are covered
  3. 5. moves ribs during respiration
  4. 6. where the nasal and oral cavity meet
  5. 8. smaller branches leading into the lung tissue
  6. 9. has cartilage rings
  7. 11. skeletal muscle that sits at the base of chest
  8. 15. where gases are exchanged
  9. 16. allergic reaction by the bronchioles
  10. 17. covers the larynx when swallowing