Across
- 1. Invisible gas that we need for our cells to work properly
- 5. Bones that protect the lungs
- 9. Body system responsible for breathing
- 11. Main function of the respiratory system
- 13. Place where air can enter
- 14. TUBES Small passages (look like tree branches) inside the lungs
Down
- 2. Help keeps your lungs healthy
- 3. Dome shaped muscle
- 4. Organs where the air exchange happens
- 6. Harmful waste gas that we need to get rid of
- 7. Tiny sacs surrounded by blood vessels
- 8. Little hairs inside bronchial tubes that help remove unwanted matter from the lungs
- 10. Damages your lungs
- 12. The windpipe