Receptors, MuscarinicReceptors, NicotinicReceptor, Muscarinic M3Receptor, Muscarinic M1Muscarinic AntagonistsMuscarinic AgonistsReceptor, Muscarinic M2N-MethylscopolamineReceptor, Muscarinic M4CarbacholCHO CellsQuinuclidinyl BenzilateDiaminesParasympatholyticsCricetinaeReceptor, Muscarinic M5Gallamine TriethiodideAtropineMuscarineCholinergic AgonistsAcetylcholinePirenzepineParasympathomimeticsCholinergic AgentsPiperidinesScopolamine HydrobromideScopolamine DerivativesThiadiazolesBethanecholRadioligand AssayDiphenylacetic AcidsMuscle, SmoothDose-Response Relationship, DrugGuinea PigsDioxolanesDicyclominePilocarpineMethacholine ChlorideRats, Sprague-DawleyMuscle ContractionIleumBinding, CompetitiveBiperidenGTP-Binding ProteinsTracheaOxotremorinePropylbenzilylcholine MustardQuinuclidinesCalciumBenzilatesPhosphatidylinositolsTropicamideArecolineRats, WistarGTP-Binding Protein alpha Subunits, Gq-G11Pertussis ToxinNicotinic AntagonistsCricetulusInositol PhosphatesGuanosine 5'-O-(3-Thiotriphosphate)Electric StimulationGTP-Binding Protein alpha Subunits, Gi-GoType C PhospholipasesKineticsMaltaMethacholine CompoundsReceptors, CholinergicNeuronsAllosteric RegulationCholinergic FibersParasympathetic Nervous SystemVirulence Factors, BordetellaObidoxime ChlorideDopamine AntagonistsPatch-Clamp TechniquesExcitatory Amino Acid AntagonistsMembrane PotentialsBethanechol CompoundsHormone AntagonistsHeart AtriaDrug AgonismCholinergic AntagonistsG Protein-Coupled Inwardly-Rectifying Potassium ChannelsSignal TransductionPyridinesLigandsCells, CulturedTacrineIsatinBenztropineNeurokinin-1 Receptor AntagonistsNarcotic AntagonistsHistamine H2 AntagonistsCyclic AMPPhysostigminePotassium ChannelsDexetimideDrug InteractionsGABA AntagonistsIsoproterenol