MecamylamineHexamethoniumHexamethonium CompoundsNicotinic AntagonistsGanglionic BlockersNicotineReceptors, NicotinicNicotinic AgonistsAtropineChlorisondamineDihydro-beta-ErythroidinePempidineDimethylphenylpiperazinium IodideAcetylcholineGanglionic StimulantsAzocinesTubocurarinePentolinium TartrateCholinergic AntagonistsParasympathomimeticsScopolamine HydrobromidePhysostigmineMuscarinic AntagonistsQuinolizinesDecamethonium CompoundsBretylium CompoundsAconitinePharmacologyAutonomic AgentsDose-Response Relationship, DrugElectric StimulationNeostigmineCholinergic AgentsReceptors, CholinergicGuinea PigsBungarotoxinsTetrodotoxinCholinergic Fibersalpha7 Nicotinic Acetylcholine ReceptorReceptors, MuscarinicGuanethidineGallamine TriethiodideParasympatholyticsGanglia, AutonomicVagus NerveIleumCholinergic AgonistsRats, Sprague-DawleyParasympathetic Nervous SystemBicyclo Compounds, HeterocyclicSubstance Withdrawal SyndromeCarbacholGastrointestinal MotilityPhentolamineNeuronsCholinesterase InhibitorsCarotid BodyMuscarinic AgonistsAutonomic Fibers, PostganglionicCatsAlkaloidsMyenteric PlexusNorepinephrineChemoreceptor CellsMuscle, SmoothReticulumDrug InteractionsSynaptic TransmissionElectrophysiologyMuscle ContractionBis-Trimethylammonium CompoundsStomach, RuminantTobacco Use DisorderNictitating MembraneVagotomyRats, WistarDopamineBlood PressureCholineSympatholyticsInjections, IntraventricularMethyltyrosinesSelf StimulationSplanchnic Nerves