Across
- 5. muscle separating the chest and abdomen
- 7. a smaller branch from the bronchi
- 8. back of throat
- 9. windpipe
- 10. a cough that is not productive
- 11. carries oxygen from the lungs to cells
- 12. voice box
- 14. the amount of oxygen present in the blood
Down
- 1. the process of moving from high to low
- 2. released during exhalation
- 3. bringing oxygen into the body
- 4. needed to produce energy
- 6. how often you breathe in a minute
- 13. the energy produced during cellular respiration