Electrical Activity and Conduction

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Across
  1. 1. Specialized fibers conducting impulses through ventricles.
  2. 4. Graphic recording of electrical activity of the heart.
  3. 9. Pathway connecting AV node to bundle branches.
  4. 10. Time between successive R waves.
  5. 11. ECG deflection representing ventricular repolarization.
  6. 14. Time from onset of atrial to onset of ventricular depolarization.
  7. 17. Up-and-down deflections on an ECG.
  8. 23. Slow depolarization that leads to an action potential in pacemaker cells.
  9. 27. Ability of heart cells to generate their own rhythm.
  10. 28. Abnormally slow heart rate (<60 bpm).
  11. 29. Flat line on ECG between S wave and T wave.
  12. 33. Impaired conduction between atria and ventricles.
  13. 34. Final branches of the Purkinje system.
  14. 35. Time from beginning of QRS complex to end of T wave.
  15. 36. Flat portion of ECG between waves.
Down
  1. 2. Primary pacemaker of the heart located in right atrium.
  2. 3. Ion channel responsible for pacemaker potentials in heart cells.
  3. 5. Cell in the heart that contracts to pump blood.
  4. 6. Normal heartbeat rhythm generated by SA node.
  5. 7. ECG deflection representing atrial depolarization.
  6. 8. Rapid, life-threatening quivering of the ventricles.
  7. 12. Rapid electrical change across cardiac cell membrane.
  8. 13. Secondary pacemaker that delays impulse to ventricles.
  9. 15. Rapid, irregular beating of the atria.
  10. 16. Junctions between cardiac cells allowing synchronized contraction.
  11. 18. Time when cardiac cells cannot be re-excited.
  12. 19. Measurement from one ECG wave to another including waves.
  13. 20. Any disturbance in normal heart rhythm.
  14. 21. ECG complex representing ventricular depolarization.
  15. 22. System of nodes and fibers coordinating heart contractions.
  16. 24. Delay at AV node to allow atria to empty before ventricles contract.
  17. 25. Abnormal pacemaker outside the SA node.
  18. 26. Abnormal heart rhythm.
  19. 30. Abnormally fast heart rate (>100 bpm).
  20. 31. Uncoordinated, rapid heart muscle contractions.
  21. 32. Heart cell that can initiate its own electrical impulse.