Which is the correct sequence of the excitation of the heart? 1, 2, 3, 4, 5 3, 4, 5, 1, 2 • 2, 3, 4, 5, 1 • 2, 1,5, 4,3
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The heart's electrical system consists of the sinoatrial node (SA node), atrioventricular node (AV node), bundle of His, Purkinje fibers, and the atria and ventricles. Show more…
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Which of the following is the CORRECT order of events in the control of the heartbeat? 1. activation of the SA node 2. contraction of the atria 3. contraction of the ventricles 4. activation of the AV node 5. transmission of the action potential through a set of modified conducting muscle fibers 1, 3, 4, 2, 5 1, 2, 5, 4, 3 1, 4, 2, 5, 3 1, 5, 4, 2, 3 1, 2, 4, 5, 3
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