Across
- 2. The orderly passage of electrical current sequentially through the heart muscle, changing it, cell by cell.
- 7. During ___________ the ventricles are relaxed and passively filling with blood from the atria.
- 8. Heart condition: Rapid heart rate
- 9. Blood vessels that carry blood away from the heart.
- 11. _________ is one of the main factors of high blood pressure.
- 12. The _________________ node starts each heartbeat. Its also know as the pacemaker.
Down
- 1. This study is a recording of the flow of electrical impulses that travel through the heart.
- 3. Heart condition: Slow heart rate
- 4. Blood vessels treat bring blood to the heart.
- 5. The ___________ cycle includes the events in one heartbeat.
- 6. The sounds in the heart are caused by the opening and closing of its __________.
- 10. When _____________ happens, the muscles in the heart contract and the blood travels away from the heart.