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Related to Purkinje fibers: atrioventricular node, bundle of His, Purkinje cells
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These Purkinje fibers enclosed in capsule in the right moderator band were forming the right bundle branch, which ran from the bundle through interventricular septum and continued through moderator band to the anterior papillary muscles.
The arrival rapidity of the excitation wave on the surface of the left ventricular wall is related to the short course of the Purkinje fibers in the avian heart.
Drugs, including antiarrhythmic drugs that prolong repolarization, do not uniformly prolong repolarization in all three layers of myocardium and Purkinje fibers, resulting in heterogeneity of repolarization.