mechanism of breathing

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Across
  1. 4. area between lungs
  2. 7. movement of air out of lungs
  3. 9. muscles involved in quiet inspiration
  4. 11. movement of air into lungs
  5. 13. rate at which gas enters or leaves the lung
  6. 14. pressure inside pleural cavity
Down
  1. 1. conduction of air in respiratory tract
  2. 2. accessory mucsle to lift sternum during forced inspiration
  3. 3. shape of diaphragm during inspiration
  4. 5. membranes of the surface of the lung
  5. 6. fluid reduction friction of lungs
  6. 8. exchange of air in respiratory tract
  7. 10. shape of diaphragm during expiration
  8. 12. sheet of muscle at bottom of ribcage