Sarcoplasmic ReticulumCalcium-Transporting ATPasesSarcoplasmic Reticulum Calcium-Transporting ATPasesCalciumRabbitsRyanodine Receptor Calcium Release ChannelRyanodineCalcium-Binding ProteinsEndoplasmic ReticulumCalcium SignalingCaffeineCalsequestrinMyocardiumMyocardial ContractionCalcium ChannelsThapsigarginMyocytes, CardiacMusclesPlasma Membrane Calcium-Transporting ATPasesKineticsAdenosine TriphosphateEgtazic AcidMuscle ProteinsTetracaineCa(2+) Mg(2+)-ATPaseSodium-Calcium ExchangerCalcium Channels, L-TypeHeart VentriclesHeartDogsMuscle Fibers, SkeletalBiological Transport, ActiveMuscle ContractionPhosphorylationMuscle, SkeletalTerpenesMagnesiumMembrane PotentialsOxalatesArrhythmias, CardiacAdenosine TriphosphatasesMicrosomesAction PotentialsIsoproterenolRuthenium RedDantroleneHeart FailureTime FactorsElectric StimulationCalmodulinCell MembraneCytosolCalcium ChlorideExcitation Contraction CouplingBiological TransportSarcolemmaDiastoleIntracellular MembranesDose-Response Relationship, DrugCells, CulturedVanadatesMolecular Sequence DataHydrogen-Ion ConcentrationCalcium, DietaryAmino Acid SequenceProcaineMyofibrilsProtein BindingModels, BiologicalInositol 1,4,5-Trisphosphate ReceptorsCalcium RadioisotopesPhosphatesBinding SitesMembrane ProteinsIndolesProtein ConformationEnzyme InhibitorsMalignant HyperthermiaMicroscopy, ElectronPotassium ChlorideBuffersCalcium Channel BlockersPotassiumErythrocyte MembranePatch-Clamp TechniquesHomeostasisFluorescent DyesCalcimycinCell LineEndoplasmic Reticulum StressCalcium IsotopesRats, Sprague-DawleyMicroscopy, ConfocalHydrolysisTrypsinElectrophysiologyXanthenesCalcium Channel AgonistsSodiumRats, Wistar