Across
- 3. Throat tube
- 6. Respiratory and circulatory systems together
- 8. Tiny vessels, exchange O2, CO2 and nutrients
- 9. Blood clotter
- 11. Black death
- 14. Part of blood, carries O2
- 16. Gas that we need
- 17. Vessel leading away from heart
- 18. Small pocket exchanges gases
- 20. Part of heart, receives blood
Down
- 1. Circuit that connects lungs and heart
- 2. Circuit that connects heart with body
- 4. Hollow muscle, never tires
- 5. Part of blood, fights off invaders
- 7. Gas waste
- 9. Part of blood, liquid of blood, carries nutrients
- 10. Another way of saying heartbeat
- 12. Lung branches
- 13. Part of heart, pumps away from heart
- 15. Voice box
- 19. Vessel leading toward heart