Respiratory System

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Across
  1. 2. Chronic disease causing increased sensibility to lungs
  2. 4. Muscle group forming the diaphragm
  3. 7. Group using the positive pressure breathing method
  4. 8. Type of pressure breathing for mammals and reptiles
  5. 12. Air going into the lungs
Down
  1. 1. Moves air into the bronchus
  2. 3. Number of protection for the lung
  3. 5. Infection of the Larynx
  4. 6. Location for gas exchange
  5. 9. Terrestrial vertebrate with the best respiratory system
  6. 10. Part allowing speech
  7. 11. Normal volume of air when breathing
  8. 13. Entrance for air