TetrodotoxinSaxitoxinSodium Channel BlockersSodium ChannelsVeratridineAction PotentialsSodiumMembrane PotentialsElectric StimulationAtropineTetraodontiformesMuscle ContractionGuinea PigsMuscle, SmoothFishes, PoisonousProtoveratrinesVeratrinePotassiumElectrophysiologyNeuronsGuanethidineCalciumIon ChannelsSynaptic TransmissionTetraethylammonium CompoundsHexamethonium CompoundsHexamethoniumAnesthetics, LocalPoisonsIleumElectric ConductivityToxins, BiologicalPatch-Clamp TechniquesAcetylcholineProcaineNeurilemmaRats, Sprague-DawleyBatrachotoxinsLidocaineAxonsAnuraRana esculentaMarine ToxinsMuscle RelaxationDecapodiformesCalcium Channel BlockersGastrointestinal MotilityNeurotransmitter AgentsAconitinegamma-Aminobutyric AcidNorepinephrineDose-Response Relationship, DrugColonMyenteric PlexusNeuromuscular JunctionCnidarian VenomsNeurotoxinsSerotoninConotoxinsTetraethylammoniumRats, WistarScorpion VenomsCesiumMethysergideMusclesNAV1.8 Voltage-Gated Sodium Channel6-Cyano-7-nitroquinoxaline-2,3-dioneGABA AntagonistsRanvier's NodesNeuromuscular Depolarizing AgentsVasoactive Intestinal PeptideEnteric Nervous SystemExcitatory Amino Acid AntagonistsTubocurarineNerve EndingsMuscle DenervationPhentolamineSynapsesVoltage-Gated Sodium ChannelsApamin4-AminopyridineEvoked PotentialsMicroelectrodesSubstance PElectrophorusNAV1.2 Voltage-Gated Sodium ChannelNeural ConductionPhysostigmineBicucullineCrustaceaTime FactorsPleurobranchaeaNifedipineCarbacholGastric FundusSynaptosomesBethanecholBariumParasympathetic Nervous SystemSerotonin Antagonists