Respiration Crossword Review

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Across
  1. 4. what happens to the muscles to decrease volume in your chest
  2. 6. breathing in
  3. 7. this decreases when the volume in your chest increases
  4. 9. “flap” that makes certain air goes down the trachea and food down the esophagus
  5. 12. dome-shaped muscle that contracts and relaxes to help you take breaths
  6. 13. how oxygen enters your blood and CO2 leaves it
  7. 14. a smaller branch of the lung
  8. 16. of air you can breathe out
  9. 17. volume of air moved in a regular breath
Down
  1. 1. reserve volume that indicates the maximum
  2. 2. the tube connecting your throat and lungs (has cartilage)
  3. 3. volume of air in your lungs that will never leave your lungs
  4. 5. what happens to the muscles to increase volume in your chest
  5. 8. the cavity of space in your chest
  6. 10. your voice box
  7. 11. the structure of the respiratory system where gas exchange occurs
  8. 15. the type of muscle between your ribs