Clinical electrocardiography . Fig. 3.—Right ventricle and left ventricle. Ventricular conduction system rep-resented schematicallv. node is the seat of origin of the cardiac impulse, as has been demon-strated by the investigations of Keith and Flack, Wybauw, Lewis,Oppenheimer and Oppenheimer, Brandenburg and Hoffmann, andGanter and Zahn. It is the region of primary cardiac electro-negativity. The excitation wave spreads from the sino-auricularnode to the auricles and then reaches the auriculoventricular auriculoventricular node (Tawara) is situated in the rightlateral aspect of the a
Clinical electrocardiography . Fig. 3.—Right ventricle and left ventricle. Ventricular conduction system rep-resented schematicallv. node is the seat of origin of the cardiac impulse, as has been demon-strated by the investigations of Keith and Flack, Wybauw, Lewis,Oppenheimer and Oppenheimer, Brandenburg and Hoffmann, andGanter and Zahn. It is the region of primary cardiac electro-negativity. The excitation wave spreads from the sino-auricularnode to the auricles and then reaches the auriculoventricular auriculoventricular node (Tawara) is situated in the rightlateral aspect of the auricular septum, just posterior to the septalcusp of the tricuspid valve (Fig. 3). From the anterior extremity 20 CLINICAL ELECTROCARDIOGRAPHY of this node the auriculoventricular bundle (His) takes its origin,passes downward and backward, and at the level of the mem-branous septum divides into a right and a left branch. Eachbranch spreads in a fan-like manner in the subendocardial tissueof the ventricles, divides, subdivide
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