Muscarinic AntagonistsReceptors, MuscarinicMuscarinic AgonistsReceptor, Muscarinic M1Receptor, Muscarinic M3PirenzepineParasympatholyticsN-MethylscopolamineAtropineParasympathomimeticsCarbacholGlycopyrrolateScopolamine DerivativesReceptor, Muscarinic M4Scopolamine HydrobromideQuinuclidinyl BenzilateOxotremorineDiaminesGallamine TriethiodideMuscarineCholinergic AgonistsAcetylcholinePropylbenzilylcholine MustardDicyclomineTropanesBenzilatesCholinergic AgentsArecolineCholinergic AntagonistsPiperidinesQuinuclidinesNicotinic AntagonistsPilocarpineGuinea PigsReceptor, Muscarinic M2Dose-Response Relationship, DrugReceptors, CholinergicAtropine DerivativesSomanTupaiidaeRats, Sprague-DawleyMecamylamineParasympathetic Nervous SystemMuscle, SmoothPhenylpropanolamineCholinesterase InhibitorsSarinRadioligand AssayBronchodilator AgentsAdrenergic beta-2 Receptor AgonistsMuscle ContractionIleumPhysostigmineHexamethonium CompoundsCholinergic FibersBinding, CompetitiveElectric StimulationHexamethoniumNerve BlockRats, WistarCalciumNicotinic AgonistsBronchoconstrictionReceptors, NicotinicTracheaPhosphatidylinositolsUrinary BladderHormone AntagonistsAdministration, InhalationExcitatory Amino Acid AntagonistsDopamine AntagonistsInositol PhosphatesAdrenergic alpha-AntagonistsBethanecholHeart BlockNeurokinin-1 Receptor AntagonistsNicotineCricetinaeNeuronsMyopiaTime FactorsDrug InteractionsMembrane PotentialsNarcotic AntagonistsHistamine H2 AntagonistsRats, Inbred StrainsPulmonary Disease, Chronic ObstructiveMyocardiumCells, CulturedCerebral CortexInterleukin 1 Receptor Antagonist ProteinSynaptic TransmissionGABA AntagonistsKineticsHistamine H1 AntagonistsElectrophysiologyHeartHippocampusMicrodialysisAction Potentials