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Electrical System of the heart

Electrical System of the heart. Taelar Shelton, MS, ATC, AT/L. Systole vs Diastole. Systole: contraction Diastole: relaxation. Events in cardiac cycle. Atrial systole with ventricular diastole Blood flows from atria to ventricles “Lubb” Ventricular systole with atrial diastole

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Electrical System of the heart

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  1. Electrical System of the heart Taelar Shelton, MS, ATC, AT/L

  2. Systole vs Diastole • Systole: contraction • Diastole: relaxation

  3. Events in cardiac cycle • Atrial systole with ventricular diastole • Blood flows from atria to ventricles • “Lubb” • Ventricular systole with atrial diastole • Blood flows from ventricles to arteries • “Dubb” • Atrial and ventricular diastole

  4. Electrical System

  5. Electrical Impulse • SA node: pacemaker, starts the electrical impulse • Located in the right atrium • Causes the heart to contract • AV node: bridge between the atria and ventricles • Purkinje system: carry the electrical signals throughout the ventricles to make them contract

  6. EKG

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