[Dicrete zones of electrical connection between Purkinje terminals and muscle fibers in dog ventricles].
Activity of Purkinje terminals (P) and neighbouring muscle (M) fibres (P -- M-pairs) in various regions of dog's right ventricle was recorded. It has been shown that transmission of stimulation from P-to M-fibres is abserved not over all endocardial surface, rather in descrete sites -- zones of P--M-interaction. The zones ellips like with the axes 300X100 micron, they are located relatively far from one another -- at the distance of 800-2000 microns. The total area of the zones equals 5% of endocardial surface. P-M delay is less within the zone of connection of P--M-fibres (4 msec) and greater outside the zone (up to 10 msec).
D000200:Action Potentials; D000818:Animals; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology*
Diskretnye zony élektricheskoĭ sviazi terminaleĭ Purkin'e s myshechnymi voloknami v zheludochke sobaki