Respiratory System Crossword

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Across
  1. 3. muscle involved in respiration
  2. 6. the gas used by cells to produce ATP energy
  3. 9. houses the vocal cords
  4. 12. the type of pleura lining the lungs
  5. 13. flap that closes during swallowing
  6. 15. the number of lobes in the right lung
Down
  1. 1. the gas expelled as a waste product during respiration
  2. 2. space at the back of the nose and mouth
  3. 4. small air sacs where gas exchange occurs
  4. 5. the type of pleura lining the thoracic cavity
  5. 7. inflammation of the bronchi
  6. 8. the trachea divides into two _
  7. 10. airway that leads to the bronchi, "windpipe"
  8. 11. the number of lobes in the left lung
  9. 14. the main organs in respiration