Muscarinic AntagonistsReceptors, MuscarinicAtropineMuscarinic AgonistsReceptor, Muscarinic M1Receptor, Muscarinic M3ParasympatholyticsPirenzepineParasympathomimeticsN-MethylscopolamineCarbacholGlycopyrrolateScopolamine DerivativesScopolamine HydrobromideReceptor, Muscarinic M4Quinuclidinyl BenzilateOxotremorineDiaminesMuscarineGallamine TriethiodideAcetylcholineCholinergic AgonistsDicyclominePropylbenzilylcholine MustardTropanesAtropine DerivativesBenzilatesCholinergic AgentsCholinergic AntagonistsArecolinePiperidinesQuinuclidinesGuinea PigsNicotinic AntagonistsPilocarpineReceptor, Muscarinic M2Receptors, CholinergicDose-Response Relationship, DrugParasympathetic Nervous SystemSomanHexamethonium CompoundsMuscle, SmoothPhysostigmineMuscle ContractionCholinesterase InhibitorsRats, Sprague-DawleyMecamylamineTupaiidaeIleumElectric StimulationCholinergic FibersSarinPhenylpropanolamineRadioligand AssayBronchodilator AgentsAdrenergic beta-2 Receptor AgonistsBinding, CompetitiveRats, WistarBethanecholTracheaBronchoconstrictionUrinary BladderHexamethoniumCalciumNicotinic AgonistsReceptors, NicotinicAdrenergic alpha-AntagonistsHormone AntagonistsNicotinePhosphatidylinositolsInositol PhosphatesDrug InteractionsAdministration, InhalationNeurokinin-1 Receptor AntagonistsMyopiaDopamine AntagonistsMethacholine CompoundsExcitatory Amino Acid AntagonistsRats, Inbred StrainsHeart RateNeuronsTime FactorsMembrane PotentialsNarcotic AntagonistsHistamine H2 AntagonistsCricetinaeVagus NerveSynaptic TransmissionPulmonary Disease, Chronic ObstructiveCerebral CortexElectrophysiologyMyocardiumHistamine H1 AntagonistsBethanechol CompoundsHeartGABA AntagonistsInterleukin 1 Receptor Antagonist ProteinMicrodialysisHistamine AntagonistsKinetics