Across
- 4. in your airways
- 5. in the small intestine
- 8. upper part of heart
- 9. fights disease
- 12. tissues that work together
- 13. carries oxygen and nutrients around the body
- 14. takes blood from the heart
Down
- 1. liquid part of blood
- 2. forms scabs
- 3. connects artery and vein
- 5. brings blood back to the heart
- 6. smaller bronchi
- 7. system that lets you pee
- 10. holds your pee
- 11. bigger bronchioles