Respiratory system

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Across
  1. 2. airway leading from larynx to the bronchus
  2. 6. large tubes which connect from the windpipe and direct air into lungs
  3. 10. small air sacks at the end of bronchioles
  4. 11. breathing air into your lungs
  5. 12. vibrations which create sounds
  6. 13. protein which binds carries oxygen around the body
  7. 16. strong but flexible tissue which lines joints and provides structure
  8. 17. carries air and food down the throat
Down
  1. 1. area in the throat used to speak
  2. 3. letting air out of the lungs
  3. 4. branches of air tubes in lungs
  4. 5. where gasses move from a low pressure to a high pressure area
  5. 7. when air or food goes down the throat
  6. 8. process where the cells break down sugar for energy
  7. 9. lid which prevents food from going into the windpipe
  8. 14. muscles between the ribs
  9. 15. organs in the chest which supply body with oxygen and remove carbon dioxide