CarbacholSodiumStrophanthidinOuabainPurkinje FibersSodium IsotopesPotassiumDysprosiumCardiac GlycosidesSodium-Potassium-Exchanging ATPaseSodium ChannelsCholinergic AgonistsMembrane PotentialsVeratrinePhotometryBiological Transport, ActiveCalciumVeratridineRubidiumIntracellular FluidMonensinAmilorideTetrodotoxinOpossumsIon ChannelsBufo bufoMyocardial ContractionSodium-Hydrogen AntiporterLithiumSodium Channel BlockersSheepReceptors, MuscarinicHeart Conduction SystemBenzofuransGuinea PigsExtracellular SpaceAnuraSodium ChlorideSodium-Calcium ExchangerMagnetic Resonance SpectroscopyMuscarinic AgonistsMyocardiumPapillary MusclesAcetanilidesCardiac Complexes, PrematureAction PotentialsEthers, CyclicLidocaineIon TransportMicroelectrodesErythrocytesHeartSodium, DietaryPerfusionHydrogen-Ion ConcentrationCell Membrane PermeabilityAtropineParasympathomimeticsKineticsBiological TransportElectrophysiologyOsmolar ConcentrationTime FactorsMuscle, SmoothDogsKidney Tubules, ProximalElectric StimulationMuscarinic AntagonistsNorepinephrineRats, Inbred StrainsRats, Sprague-DawleyCell MembraneReceptor, Muscarinic M3Intracellular MembranesAdenosine TriphosphateRats, WistarMagnesiumPatch-Clamp TechniquesFluorescent DyesHypertensionQuinuclidinyl BenzilateCells, CulturedMuscle ContractionSodium Dodecyl SulfateSodium BicarbonateHeart VentriclesReceptor, Muscarinic M2TemperaturePirenzepineN-MethylscopolamineTracheaNeuronsDose-Response Relationship, DrugAcetylcholineAngiotensin IICell LineEpithelial Sodium ChannelsSodium NitriteIleumParasympatholytics