Across
- 2. Blood vesseles that surround the bronchioles
- 4. What is the flap that opens and closes?
- 6. Pumps blood to the rest of the body
- 7. Tiny branch of air tubes in your lungs
- 9. Carries oxygen poor blood back to the heart
- 12. What is the system that consists of breathing?
- 14. Carries oxygen throughout the body
- 16. what do you breathe air into?
Down
- 1. How much pressure is exerted in the blood
- 3. expansion and contraction of the heart
- 5. Oxygen rich blood that carries blood away from the heart
- 8. The act of taking air into your lungs
- 10. what food travels down
- 11. Two large tubes in your lungs
- 13. Carries glucose, fats and vitamins throughout the body
- 15. What is your voice box called?