Muscarinic AntagonistsReceptors, MuscarinicMuscarinic AgonistsAtropineReceptor, Muscarinic M1Receptor, Muscarinic M3ParasympathomimeticsCarbacholParasympatholyticsOxotremorinePirenzepineReceptor, Muscarinic M4N-MethylscopolamineMuscarineScopolamine DerivativesScopolamine HydrobromideCholinergic AgonistsQuinuclidinyl BenzilateAcetylcholineDiaminesGlycopyrrolateBethanecholGallamine TriethiodideArecolineCholinergic AgentsPilocarpinePropylbenzilylcholine MustardReceptor, Muscarinic M2QuinuclidinesGuinea PigsBenzilatesPiperidinesDicyclomineDose-Response Relationship, DrugMethacholine CompoundsParasympathetic Nervous SystemMuscle, SmoothReceptors, CholinergicTropanesAtropine DerivativesCholinergic AntagonistsNicotinic AntagonistsBethanechol CompoundsHexamethonium CompoundsMuscle ContractionRats, Sprague-DawleyPhysostigmineIleumElectric StimulationCholinergic FibersCalciumRadioligand AssayNicotinic AgonistsCholinesterase InhibitorsMecamylaminePhosphatidylinositolsUrinary BladderSomanTracheaRats, WistarBinding, CompetitiveMembrane PotentialsInositol PhosphatesNeuronsNicotineReceptors, NicotinicTupaiidaeGTP-Binding ProteinsThiadiazolesParotid GlandElectrophysiologyPhenylpropanolamineVagus NerveSarinCricetinaeMethacholine ChlorideDimethylphenylpiperazinium IodideBronchodilator AgentsDioxolanesPertussis ToxinIsoproterenolDrug InteractionsRats, Inbred StrainsTime FactorsHeartDopamine AgonistsCHO CellsBronchoconstrictionHexamethoniumCells, CulturedKineticsMyocardiumAdrenergic beta-2 Receptor AgonistsSynaptic TransmissionNeostigmineGanglia, SympatheticVirulence Factors, BordetellaGuanosine 5'-O-(3-Thiotriphosphate)Cerebral CortexSalivation