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Coaductile pathway, Timing of contraction signal & Conduction system and ECG

By: HWC, Views: 6829

• When the system is healthy, the signal to contract the entire conduction system originates in the SA node - known as the heart's pacemaker. • The SA node triggers contraction because it depolarizes at a faster rate than other parts of the conduction system. • The wave of excitation fr...

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