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Kines 314 Lecture 1-3 - Anatomy and Flow The heart muscle...

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    Anatomy and Flow
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    The heart muscle
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    The heart muscle
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    Conduction System
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    Automaticity
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    Automaticity Cells Rate SA Node 60-100 bpm AV Node 40-60 bpm Purkinje 30-40 bpm Phase 4 dV/dt
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    Ventricular action potential
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    Conduction System and ECG T
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    EKG - Limb Leads
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    Rhythms Sinus Rhythm HR  60-100 Bradycardia HR  < 60 TachycardiaHR  > 100
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    Electro-Mechanical Coupling
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    Cardiac Cycle
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    Cardiac Cycle Animation http://library.med.utah.edu/kw/pharm/hyper_heart1.html
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    Wiggers Diagram
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    Wiggers Diagram
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    Depolarization of ventricles Electrical impulse propagates from SA node to AV node to ventricle
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    Isovolumic contraction AV valves closed; ventricle contracting Increase in pressure with no change in volume
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