Respiratory System

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Across
  1. 2. / voicebox
  2. 4. / muscular disc under the lungs
  3. 6. / tiny air sacs where gas exchange happens
  4. 8. / caused by spasming diaphragm
  5. 9. / part of the brain that controls breathing
  6. 11. / system that has gas exchange as primary function
  7. 15. / flaplike structure that prevents liquid or food from entering trachea
Down
  1. 1. / windpipe
  2. 3. / diaphragm and intercostals relax
  3. 5. / throat
  4. 7. / spongy organs with lobes
  5. 10. / swelling of vocal cords (possibly from infection)
  6. 12. / caused by low oxygen; forces a deep breath
  7. 13. / diaphragm lowers and intercostals contract
  8. 14. / divides the nose