Across
- 2. description of heart rate measured externally
- 3. squeezing of heart muscle causing a pump
- 8. image 2
- 9. The quivering of the heart's chambers
- 10. section of the ECG corresponding to ventricular depolarization
- 11. the electrical change causing the heart muscle to contract
- 13. special feature of heart muscle allowing it to contract without stimulus
- 14. one of the large heart chambers
Down
- 1. the muscular wall between the ventricles
- 4. image 3
- 5. image 1
- 6. device used to shock the heart back into rhythm
- 7. one of the small heart chambers
- 12. the piece of tissue that causes the heart to beat