Respiratory System Vocabulary Review Crossword Puzzle

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Across
  1. 1. You do this when something irritaes your tracea or bronchi
  2. 6. A gas that you breathe out. It is a waste gas.
  3. 8. You do this when something irritates your nose
  4. 11. This prevents food from going down your lungs (throat)
  5. 15. Two tubes that connect the trachea to the lungs
  6. 16. Large muscle that controls the lungs
  7. 18. Common name for trachea
  8. 19. One of the two places where air enters your body
Down
  1. 2. All animals need this gas to make energy from food
  2. 3. Scientific name for windpipe
  3. 4. Fish have these instead of lungs
  4. 5. One of two places where air enters your body
  5. 7. Inhale and exhale
  6. 9. Breathe out
  7. 10. You do this when something irritates your diaphragm.
  8. 12. What we breathe
  9. 13. breathe in
  10. 14. You do this when you don't get enough oxygen to your blood
  11. 17. The place where oxygen enters the blood
  12. 18. When we exhale, we breathe this plus carbon dioxide