A method of measurement of longitudinal resistances in an isolated cardiac and smooth muscle preparation.
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.
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*