CarbacholCholinergic AgonistsReceptors, MuscarinicAtropineMuscarinic AgonistsMuscarinic AntagonistsElectric StimulationQuinuclidinyl BenzilateReceptor, Muscarinic M2Receptor, Muscarinic M3Receptor, Muscarinic M1CalciumMuscle, SmoothPirenzepineN-MethylscopolamineLacrimal ApparatusCholinergic AgentsParotid GlandDose-Response Relationship, DrugGuinea PigsAcetylcholineMuscle ContractionRats, Sprague-DawleyParasympathomimeticsInositol PhosphatesParasympathetic Nervous SystemReticular FormationStimulation, ChemicalCells, CulturedCyclic AMPReceptors, CholinergicPonsMembrane PotentialsReceptor, Muscarinic M4Protein Kinase CColforsinRats, WistarSignal TransductionDopamine AgonistsElectric Stimulation TherapyGTP-Binding ProteinsPertussis ToxinAction PotentialsKineticsVirulence Factors, BordetellaCell LineEnzyme ActivationEnzyme InhibitorsTracheaIsoproterenolNeuronsAdenylate CyclaseHistaminePatch-Clamp TechniquesSynaptic TransmissionPhysical StimulationPhosphorylationParasympatholyticsIleumDeep Brain StimulationTetradecanoylphorbol AcetateAdrenergic beta-AgonistsCell MembranePhosphatidylinositols