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The Cardiac Cycle

The Cardiac Cycle

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The Cardiac Cycle

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  1. The Cardiac Cycle

  2. Cardiac Conduction System

  3. Sinoatrial (SA) node

  4. Atrioventricular (AV) node

  5. Antrioventricular (AV) Bundle (Bundle of His)

  6. Right bundle branch

  7. Left bundle branch

  8. Purkinje Fibers

  9. EKG = ECG = electrocardiogram

  10. Leads (limb leads)

  11. P wave Atrial Depolarization

  12. QRS complex Ventricular Depolarization

  13. T wave Ventricular Repolarization

  14. Depolarization

  15. Repolarization

  16. Bradycardia Resting heart rate under 60 bpm

  17. Tachycardia Heart rate exceeds 100 bpm

  18. Fibrillation Rapid, irregular, and unsynchronized contraction of muscle fibers