Across
- 3. branched off from the bronchi
- 5. your windpipe
- 7. the color of arteries
- 8. splits into 2
- 9. separates the ventricles
- 12. what arteries transport
- 13. the heart has 4
- 14. largest artery leaving the heart
- 18. after the right atrium
- 19. attach themselves to the alveoli to transfer gases
- 20. where oxygen poor blood enters the heart
Down
- 1. part of the respiratory system
- 2. the color of veins
- 4. what veins transport
- 6. after the left atrium
- 10. where oxygen rich blood enters the heart
- 11. travel away from the heart
- 15. tiny air sacks that contain gases
- 16. transports oxygen poor blood into the right atrium
- 17. part of the circulatory system