The Respiratory System

1234567891011
Across
  1. 3. absorbed my plants in photosynthesis
  2. 5. main function
  3. 6. a group of tissue
  4. 9. taking air in and out
  5. 10. where we receive food
  6. 11. a set of things working together
Down
  1. 1. organ we smell through
  2. 2. a colorless and odorless gas
  3. 4. increases the volume of the thorax and so inflates the lungs
  4. 7. a large tube that helps convey air to the lungs
  5. 8. primary organ of the respiratory system