Across
- 2. pumps blood to the rest of the body
- 3. carry blood to the heart
- 4. can cause a heart attack
- 5. heart beating too fast
- 8. when the valves of the heart don't open to let blood through
- 9. heart beating too slow
- 10. allow blood flow in one direction
Down
- 1. connect arteries and veins
- 6. abnormal rythym of the heart
- 7. carry blood away from the heart