Across
- 4. Attack supply of blood to the heart is suddenly blocked
- 7. artery becomes clogged with plaques.
- 8. prevents blood from flowing in the wrong direction.
- 9. blood supply to the brain becomes blocked.
Down
- 1. pumps blood to the ventricles.
- 2. 2 lower chambers.
- 3. Main artery
- 4. blood pressure is higher than it should be.
- 5. carry blood to the heart.
- 6. pumps blood away from the heart.