Across
- 5. windpipe
- 6. how often you breathe in a minute
- 7. muscle separating the chest and abdomen
- 9. the amount of oxygen present in the blood
- 10. the process of moving from high to low
Down
- 1. released during exhalation
- 2. a smaller branch from the bronchi
- 3. back of throat
- 4. bringing oxygen into the body
- 8. the energy produced during cellular respiration