Receptors, MuscarinicQuinuclidinyl BenzilateN-MethylscopolaminePirenzepineGallamine TriethiodideMuscarinic AntagonistsOxotremorineReceptor, Muscarinic M3CarbacholMuscarinic AgonistsScopolamine DerivativesReceptor, Muscarinic M1MyocardiumParasympatholyticsReceptor, Muscarinic M2Receptor, Muscarinic M4AtropineHeartParasympathomimeticsMuscarineDiaminesCholinergic AgonistsAcetylcholineHeart AtriaScopolamine HydrobromideBethanecholBenzilatesCholinergic AgentsMyocytes, CardiacPilocarpinePropylbenzilylcholine MustardDicyclomineMuscle, SmoothHeart RateGuinea PigsPiperidinesParasympathetic Nervous SystemQuinuclidinesReceptor, Muscarinic M5ArecolineReceptors, CholinergicMethacholine CompoundsRadioligand AssayIleumMuscle ContractionBethanechol CompoundsUrinary BladderCardiac OutputCalciumDose-Response Relationship, DrugGTP-Binding ProteinsCholinesterase InhibitorsThiadiazolesCHO CellsPhysostigmineCholinergic AntagonistsAtropine DerivativesPhosphatidylinositolsRats, Sprague-DawleyDexetimideTropicamideElectric StimulationMethacholine ChlorideVagus NerveTracheaAlcuroniumCholinergic FibersHexamethonium CompoundsInositol PhosphatesCricetinaeArrhythmias, CardiacGTP-Binding Protein alpha Subunits, Gq-G11Binding, CompetitiveCardiac Surgical ProceduresGuanosine 5'-O-(3-Thiotriphosphate)Death, Sudden, CardiacRats, WistarMembrane PotentialsTrihexyphenidylIsoproterenolMyocardial ContractionType C PhospholipasesSalivationPertussis ToxinGlycopyrrolatePhenylpropanolamineUrinary Bladder, OveractiveElapid VenomsTime FactorsMecamylamineNicotinic AntagonistsSignal TransductionNeuronsDioxolanesDogsCells, CulturedPatch-Clamp TechniquesKineticsParotid GlandAcetylcholinesterase