The Cardiac Conduction System and the Electrocardiogram (ECG/EKG) 1) Define the following terms: a) Depolarization b) Repolarization c) Systole d) Diastole 2) Label each structure on the diagram. Next to the image, describe the path of the electrical signal. Sinoatrial (SA) node Atrioventricular (AV) node AV Bundle of His Right and left bundle branches Purkinje fibers
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Depolarization: Depolarization is the process by which the resting membrane potential of a cell becomes less negative, leading to the initiation of an action potential. In the context of the heart, depolarization is the electrical event that triggers the Show more…
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All of the following are part of the cardiac conduction system except the: a. chordae tendineae b. Purkinje fibers c. sinoatrial node d. atrioventricular bundle
Which of the following is the correct sequence of a cardiac impulse? (A) SA node $\rightarrow$ AV node $\rightarrow$ Purkinje fibers $\rightarrow$ bundle of His $\rightarrow$ ventricles (B) AV node $\rightarrow$ bundle of His $\rightarrow$ Purkinje fibers $\rightarrow$ ventricles $\rightarrow$ atria (C) SA node $\rightarrow$ atria $\rightarrow A V$ node $\rightarrow$ bundle of His $\rightarrow$ Purkinje fibers $\rightarrow$ ventricles (D) SA node $\rightarrow$ AV node $\rightarrow$ atria $\rightarrow$ bundle of His $\rightarrow$ Purkinje fibers $\rightarrow$ ventricles
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