Cholinergic AgonistsCarbacholParasympathomimeticsMuscarinic AgonistsCholinergic AgentsReceptors, MuscarinicBethanecholOxotremorineAtropineMuscarinic AntagonistsAcetylcholineBethanechol CompoundsArecolineMuscarineBenzylidene CompoundsReceptors, CholinergicNicotinic AgonistsCholinergic AntagonistsReceptors, NicotinicNicotinePhysostigmineLacrimal ApparatusParasympatholyticsQuinuclidinyl BenzilateReceptor, Muscarinic M1Decamethonium CompoundsAdrenergic AgonistsDimethylphenylpiperazinium IodideReticular FormationRats, Sprague-DawleyDopamine Agonistsalpha7 Nicotinic Acetylcholine ReceptorMethacholine CompoundsDose-Response Relationship, DrugReceptor, Muscarinic M3PonsChediak-Higashi SyndromeLevamisoleParasympathetic Nervous SystemAutonomic AgentsCholinergic FibersCalciumCholinesterase InhibitorsScopolamine HydrobromidePilocarpineElectric StimulationIsoproterenolGoblet CellsCells, CulturedMembrane PotentialsTubocurarineSleep, REMBungarotoxinsGABA AgonistsMecamylamineSweat GlandsCyclic AMPSalivationNicotinic AntagonistsAmylasesMethacholine ChlorideRats, WistarPurinergic P1 Receptor AgonistsAction PotentialsParotid GlandElectric OrganNeuronsMicroinjectionsKineticsReceptor, Muscarinic M2PropranololSynaptic TransmissionVasoactive Intestinal PeptideIontophoresisPatch-Clamp TechniquesTorpedoSignal TransductionAcetylcholinesteraseElectrophysiologyAdrenergic alpha-2 Receptor AgonistsPyridinesTime FactorsHippocampusSerotonin 5-HT2 Receptor AgonistsNeural InhibitionGuinea PigsPyramidal CellsSerotonin 5-HT1 Receptor AgonistsProtein Kinase CHistamine AgonistsInositol PhosphatesPurinergic P2 Receptor AgonistsMuscle, SmoothAdrenergic beta-AgonistsCytoplasmic GranulesGTP-Binding Proteinsgamma-Aminobutyric AcidGABA-A Receptor AgonistsStimulation, ChemicalPotassium