Receptor, Muscarinic M3Receptor, Muscarinic M1Receptors, MuscarinicReceptor, Muscarinic M2Muscarinic AntagonistsMuscarinic AgonistsReceptor, Muscarinic M4N-MethylscopolamineReceptor, Muscarinic M5DiaminesCarbacholParasympatholyticsGallamine TriethiodidePirenzepineAtropineDiphenylacetic AcidsCholinergic AgonistsCholinergic AgentsAcetylcholineThiadiazolesMuscarineDioxolanesScopolamine HydrobromideScopolamine DerivativesPiperidinesParasympathomimeticsDicyclomineBethanecholBiperidenOxotremorineMuscle, SmoothRadioligand AssayPilocarpineMethacholine ChlorideCHO CellsGuinea PigsMaltaTracheaCricetinaeTropicamideDrug AgonismGTP-Binding ProteinsIleumObidoxime ChlorideMuscle ContractionGTP-Binding Protein alpha Subunits, Gq-G11Dose-Response Relationship, DrugBenztropineGTP-Binding Protein alpha Subunits, Gi-GoIsatinPertussis ToxinPhosphatidylinositolsType C PhospholipasesTacrineCricetulusVirulence Factors, BordetellaAllosteric RegulationInositol PhosphatesGuanosine 5'-O-(3-Thiotriphosphate)Cholinergic FibersBinding, CompetitivePropylbenzilylcholine MustardHeart AtriaG Protein-Coupled Inwardly-Rectifying Potassium ChannelsRGS ProteinsBenzilatesArecolinePhthalimidesCalciumRats, Sprague-DawleyPhospholipase C betaQuinuclidinesAllosteric SiteMethacholine CompoundsQuinuclidinyl BenzilateElectric StimulationTritiumReceptors, CholinergicParasympathetic Nervous SystemIsoindolesRats, WistarPatch-Clamp TechniquesBethanechol CompoundsMuscle RelaxationKineticsTransfectionIsoproterenolSignal TransductionPotassium ChannelsPyridinesInositol 1,4,5-TrisphosphateDexetimideCyclic AMPReceptors, PresynapticMembrane PotentialsReceptor Cross-TalkPhysostigmineGanglia, ParasympatheticAdenylate CyclaseMyocardium