Across
- 2. blood vessel that carries blood to heart
- 5. where gas exchange happens
- 6. pipe where air goes into lungs
- 8. organ where gas exchange happens
- 11. tarnsports nutrients
- 13. helps recover injuries comes from blood
- 15. smaller passages in lungs
Down
- 1. liquid part of blood
- 3. tube that connects mouth and stomach
- 4. fights diseases
- 7. smallest blood vessel
- 9. passages where air is in the lungs
- 10. blood vessel that takes blood away from heart
- 12. a muscular sac where digestion continues
- 14. where digestion starts