AcetylcholineSodiumReceptors, NicotinicReceptors, Cholinergicalpha7 Nicotinic Acetylcholine ReceptorSodium ChannelsBungarotoxinsTorpedoVesicular Acetylcholine Transport ProteinsReceptors, MuscarinicNicotinic AntagonistsNicotinic AgonistsSodium, DietaryElectric OrganAtropineNicotineNeuromuscular JunctionPhysostigmineCarbacholSodium ChlorideTubocurarineCholinergic AgentsNitroprussideMuscarinic AntagonistsCholineVasodilationVasodilator AgentsCholinesterase InhibitorsAcetylcholinesteraseDose-Response Relationship, DrugReceptor, Muscarinic M2Muscarinic AgonistsMusclesSodium Channel BlockersReceptor, Muscarinic M1Myasthenia GravisMembrane PotentialsPotassiumReceptor, Muscarinic M3ParasympathomimeticsMotor EndplateSodium IsotopesMecamylamineConotoxinsAconitineCholine O-AcetyltransferaseSodium Dodecyl SulfateGuinea PigsSodium BicarbonateCholinergic AgonistsEndothelium, VascularAzocinesParasympatholyticsElectric StimulationKineticsCalciumSodium NitriteOxotremorineMuscle ContractionParasympathetic Nervous SystemNitric OxideCobra Neurotoxin ProteinsQuinuclidinyl BenzilateRats, Sprague-DawleyIon ChannelsTetrodotoxinNeuronsHexamethonium CompoundsCholinergic FibersAgrinElectrophysiologyElectrophorusN-MethylscopolamineEpithelial Sodium ChannelsMuscle DenervationHemicholinium 3Cholinergic AntagonistsDihydro-beta-ErythroidineBicyclo Compounds, HeterocyclicMuscle, SmoothNorepinephrineSodium CompoundsIontophoresisSynaptic TransmissionScopolamine HydrobromideNeostigmineSodium SalicylateXenopus laevisTime FactorsQuinolizinesGallamine TriethiodideReceptor, Muscarinic M4Decamethonium CompoundsPatch-Clamp TechniquesCromolyn SodiumIleumPirenzepineSodium AzideRabbitsSynaptic Membranes