Across
- 4. allows the blood to flow in one direction
- 7. type of circulation that nourishes the heart
- 9. main function of the heart
- 10. divides the heart longitudinally
Down
- 1. ventricles relaxing
- 2. receiving chambers
- 3. conduction system that sets basic rhythm of the heart
- 5. discharging chambers
- 6. ventricles contracting
- 8. main layer of the heart that contracts