[Passive electrical properties of the atrioventricular region of the rabbit heart].
Passive electrical properties of AV node region of rabbit's heart were studied. Electrotonic anisotropism (a9) was characteristic of the entire AV node. a9 was the largest in the region of entry from the crista terminalis and in the lower node. The input resistance, RBX, of AV node was 1.3 to two-fold that measured in atrial trabeculae. Analysis of the results yielded the following specific resistance values for midnodal region: 1 Ohm--cm2 for contacts, 1200 Ohms-cm for intracellular space and 1300 Ohms-cm2 for electrogenic membrane. The nature of intercellular interaction and AV delay is discussed on the basis of the results obtained.
D000818:Animals; D001283:Atrioventricular Node / Q000502:physiology*; D004594:Electrophysiology; D006329:Heart Conduction System / Q000502:physiology*; D011817:Rabbits
Passivnye élektricheskie svoĭstva atrioventrikuliarnoĭ oblasti serdtsa krolika.