Across
- 4. Largest Artery
- 6. Largest Vein
- 8. when the heart beats irregularly
- 9. carry blood to the heart
- 10. oxygenates the blood
Down
- 1. Pumps blood
- 2. smallest blood vessel
- 3. when heart beats too fast
- 5. carry blood away from the heart
- 7. opens and closes to allow passage of blood