IB DP Gaseous Exchange

1234567891011121314151617
Across
  1. 3. Windpipe
  2. 6. any of the many tiny air sacs of the lungs
  3. 7. Cells that line the alveoli
  4. 9. Sheet of muscle beneath the lungs
  5. 11. Muscles used in breathing
  6. 14. Mucus producing cells
  7. 15. Substance that causes cancer
  8. 16. Used to measure the rate and depth of breathing
  9. 17. How oxygen enters cells
Down
  1. 1. Small tubes in the lungs
  2. 2. Fluid filled cavitity around the lungs
  3. 4. Fibres that make breathing out largely passive
  4. 5. A condition where there is a loss of surface area of the lungs
  5. 8. Breathing out
  6. 10. cells that clean up dust and bacteria
  7. 12. Small hairs that move mucus
  8. 13. Replacing stale air with fresh air