The Respiratory System

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Across
  1. 3. the medical name of your voice box
  2. 5. where gas exchange of oxygen and carbon dioxide occurs
  3. 8. dioxide we breath it out
  4. 9. to not use oxygen when we exercise
  5. 10. the hairs in your nose
  6. 11. we breath it in
Down
  1. 1. to use oxygen when we exercise
  2. 2. the main organ of the respiratory system
  3. 4. the muscle that pushes air out of your lungs
  4. 6. it stops you from choking
  5. 7. when we breath in
  6. 12. when we breath out