Across
- 2. exchanges oxygen
- 7. tiny sacs of lung tissue
- 10. large flat musle
- 11. smallest blood vessel
- 12. asorbs water
- 13. digestion begins
- 15. lower part of the heart
Down
- 1. liquid in blood
- 3. connects mouth to stomach
- 4. direct air to lungs
- 5. scabs
- 6. filiter
- 8. most absorb food
- 9. fights diseases
- 14. upper part of heart