Across
- 1. a waste product in anaerobic respiration from yeast/plants
- 3. tube which carries air from the nose and mouth down to the lungs
- 4. muscular movements causing air to move into and out of the lungs
- 9. the movement of air in and out of the lungs
- 10. pumps blood into the lungs
- 11. acronym used for efficient gas exchange
- 12. keeps the air passage open
- 15. dioxide waste product of aerobic respiration for living things
- 16. a chamber with a thick wall of muscle
- 18. in tobaco which damages the lungs
- 19. a sheet of muscle
- 21. animals and yeast/plants use this to get energy
- 22. small tubes into which the brooch branch
- 25. smoking cigarettes can cause this disease
- 26. a long tube support by cartilage
- 27. organs situated within the ribcage which allow breathing to occur
Down
- 1. breathing out
- 2. a disease cause by chemicals in smoke
- 5. membranes strong, slippery membranes which surround each lung
- 6. whilst breathing in these muscles contract
- 7. a waste product in anaerobic respiration from animals
- 8. air sacks where gas exchange occurs
- 13. a type of respiration which occurs without oxygen
- 14. one of two tubes into which the trachea branches, carrying air into lungs
- 17. very thin walls of blood vessels
- 20. acronym used to determine is something is living
- 22. red liquid that circulates in the arteries
- 23. breathing in
- 24. waste product for aerobic respiration for living things