Across
- 3. cava where the blood enters
- 7. white blood cell
- 9. middle layer of heart
- 12. red blood cell
- 13. artery blood goes out of the heart with this
- 15. not oxygen rich
Down
- 1. largest artery
- 2. surrounds your heart
- 4. upper chamber of heart
- 5. vein blood goes to the heart with this
- 6. lower chamber of heart
- 8. platelet
- 10. smallest blood vessels
- 11. inner lining of heart
- 14. oxygen rich