Breathing Recap

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Across
  1. 3. The process which allows oxygen and carbon dioxide to pass to and from the blood stream
  2. 6. The pipe which allows air to travel to the lungs
  3. 9. Muscle under the rib cage that moves down when we breathe in
  4. 11. Tiny branches that spread from the trachea and all through the lungs
  5. 12. The name given to the breathing system
  6. 13. Muscles between the ribs that allow the ribcage to move
Down
  1. 1. Protects the lungs
  2. 2. Fill with air when we breathe in
  3. 4. The gas the body needs to survive
  4. 5. The waste gas we exhale
  5. 7. Branches off the trachea and into the lung
  6. 8. The organ that pumps the blood around the body
  7. 10. Air sacs found in the lungs