The Daliy Mail

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Across
  1. 2. This gender has an average lung capacity of 6.2
  2. 5. The muscle that flattens during inhalation
  3. 8. This is what happens to the diaphram when we inhale
  4. 9. The gender that have an average lung capacity of 4.2
  5. 10. The windpipe
  6. 11. Breathing in
  7. 12. The lungs and heart are part of the _________ system
  8. 14. There are 300 million of these in the human body
  9. 15. Breathing out
  10. 16. You breath ______ when doing physical activity
Down
  1. 1. CO2 is a _____ product
  2. 2. The start and end of the breathing/exhalation system
  3. 3. CO2
  4. 4. Lungs have a certain ______
  5. 6. This type of fitness can increase lung capacity
  6. 7. The tubes that supply the lungs with air
  7. 12. Protects the internal chest organs
  8. 13. The Lungs have a ______ texture