RESPIRATORY SYSTEM

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Across
  1. 4. SYSTEM Body system responsible for breathing
  2. 6. Harmful waste gas that we need to get rid of
  3. 10. Tiny sacs surrounded by blood vessels
  4. 11. Help keeps your lungs healthy
  5. 13. Place where air can enter
  6. 14. Organs where the air exchange happens
Down
  1. 1. Invisible gas that we need for our cells to work properly
  2. 2. Main function of the respiratory system
  3. 3. Small passages (look like tree branches) inside the lungs
  4. 5. Dome shaped muscle
  5. 7. Bones that protect the lungs
  6. 8. The windpipe
  7. 9. Damages your lungs
  8. 12. Little hairs inside bronchial tubes that help remove unwanted matter from the lungs