Respiratory System Review

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Across
  1. 3. chest
  2. 4. main nutrient used in respiration
  3. 7. lets you breathe while eating
  4. 11. diaphragm relaxes, moves up
  5. 12. large muscle beneath the lungs
  6. 13. move mucus to the throat to be swallowed
  7. 14. without oxygen
  8. 17. tiny air sacs
  9. 18. smaller branches of bronchi
  10. 21. stops food from entering trachea
  11. 23. tube that connects the mouth/nose with lungs
  12. 25. food is broken down to release energy
  13. 26. top part of the trachea
  14. 27. muscles between ribs
Down
  1. 1. breathe out
  2. 2. produced by anaerobic respiration
  3. 5. wrapped around the alveoli
  4. 6. gas is able to pass through it
  5. 8. in the presence of oxygen
  6. 9. make sounds when air passes over them
  7. 10. breathe in
  8. 15. moistens air, traps pathogens
  9. 16. traches divides into two of them
  10. 19. gas organisms need
  11. 20. diaphragm contracts, moves down
  12. 22. gases entering and leaving an organism
  13. 24. gas that must be removed