The Respiratory System
Across
- 4. Anther word for our throat
- 5. Main organ for breathing
- 7. Exercising without oxygen
- 8. Muscles inbetween our ribs
- 11. The by-product of anaerobic respiration
- 13. Tubes in our lungs
- 14. Small air sacs where gas exchange occurs
Down
- 1. The amount of oxygen that needs to be repaid to the body after intense exercise
- 2. Wind pipe
- 3. Voice box
- 6. Our primary inhaler
- 9. Our main energy source
- 10. Exercising using oxygen
- 12. Muscle that is dome shaped