Respiratory System

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