Across
- 3. A cavity at the back of the nose, connecting the mouth and nose to the oesophagus
- 4. Scientific name for voice box
- 6. Tiny hairs lining the nostrils
- 12. __________ dioxide is breathed out
- 13. _________ system contains organs and tissues taking air into the body
- 15. A blood clot
- 16. _________ system is responsible for carrying materials and nutrients around the body
- 18. Small tubes formed by the division of the Bronchi
- 19. Blood vessel that carries blood back to the heart
Down
- 1. The protein found in your blood that carries oxygen
- 2. Tubes formed by the division of the trachea
- 5. Sheet of muscle that separates the chest from the abdomen
- 7. _________ muscle is the type of muscle found in the heart
- 8. When someones inhales, their lungs expand
- 9. Cluster of gas sacs at the end of the bronchioles where gas exchange takes place
- 10. A series of chemical reactions that takes place in cells to release energy
- 11. _____ exchange is the process whereby oxygen and carbon dioxide move between the bloodstream and lungs
- 14. Blood vessel that carries blood away from the heart
- 17. Tube that carries air from the nose and mouth into the chest cavity