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Natural Pacemaker of the heart.
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Sinotrial Node (SAN) Right Atrium Node (AVN) R ight Ventricle Right Bundle Branch (RBB) Left Atrium HIS bundle Left Bundle Branch (LBB) Left Ventricle Purkinje Fitrrs.
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vena Right atrium cava 1 The sinoatrial (SA) node (pacemaker) generates impulses. Intemodal pathway 2 The impulses pause (0.1 s) at the atrioventricular (AV) node 3 The atrioventricular (AV) bundle connects the atria to the ventricles. 3 hhe bundle branches conduct the impulses through the septum interventricular septum 4 he Purkinje fibers depolarize the contractile cells of ventricles. Left atrium Purkinjie fibers Inter-ventricular septum 'j Figure 7.8 mie sequence of electrical conduction of heart..