Across
- 5. The muscle that contracts downwards pulling air into the lungs.
- 7. The passages that direct air into the right and left lung.
- 9. The gas needed for our body to use.
- 10. Breathing in
- 11. The air sacs where gaseous exchange takes place.
- 13. They pull the ribcage upwards helping to fill the lungs with air.
- 14. Sticky liquid that helps trap dirt and dust.
Down
- 1. The name given to the exchange of gases into and out of the blood stream
- 2. Breathing out
- 3. The windpipe
- 4. The gas our body creates and needs to get rid of.
- 6. The smaller passages that direct air to the alveoli.
- 8. Blood vessels that surrounds the alveoli.
- 12. The two sacs that draw air into the body.