Across
- 2. one of the two tubes that connects the lungs and trachea
- 4. It uses glucose to release energy that cells can use
- 6. A large, flat muscle below your lungs that help us breathe
- 9. A change that makes at least one new product
- 11. To breathe out
- 15. To spread out; gases do this during gas exhange
- 16. Respiration that uses oxygen
- 18. The scientific name for the windpipe; where air moves
- 19. A gas that mixes with haemoglobin do reduce the amount of oxygen in blood
- 20. The substance in cigarettes that causse cancer
- 22. Describes something that is difficult to stop doing
- 23. To breathe in
Down
- 1. It protects the trachea & makes sound
- 3. The little air sacs in our lungs where gas exchange happens
- 5. Very small particles or pieces of matter
- 7. The main organ of the respiratory system
- 8. Getting oxygen into the blood & removing carbon dioxide from the bodyy
- 10. The body parts used to get oxygeb and get rid of carbon dioxide
- 12. The substance in cigarettes that make them addictive
- 13. It makes sound & protects the trachea; also known as the voice box
- 14. A disease caused by cells dividing & growing uncontrollably
- 15. A substance that changes how the body works
- 17. The muscles between ribs that move when you breathe
- 21. It connects the larynx to the bronch; air flows through here