title: A method of measurement of longitudinal resistances in an isolated cardiac and smooth muscle preparation.
abstract: The longitudinal internal as well as external resistance was measured by means of simultaneous intracellular and sucrose gap voltage recordings. The longitudinal internal resistance could be calculated from a formula comprising the shunt resistance, membrane action potential and transgap action potential before and after shunting. The longitudinal external resistance was calculated from another formula comprising the same quantities.
mesh_terms: D000818:Animals; D004594:Electrophysiology / Q000295:instrumentation / Q000379:methods; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D008433:Mathematics; D008954:Models, Biological; D009130:Muscle, Smooth / Q000502:physiology*; D011817:Rabbits; D012849:Sinoatrial Node / Q000502:physiology*