AcetylcholineReceptors, NicotinicReceptors, Cholinergicalpha7 Nicotinic Acetylcholine ReceptorBungarotoxinsTorpedoVesicular Acetylcholine Transport ProteinsReceptors, MuscarinicNicotinic AntagonistsNicotinic AgonistsAtropineElectric OrganNicotineNeuromuscular JunctionPhysostigmineCarbacholTubocurarineCholinergic AgentsTime FactorsMuscarinic AntagonistsCholinesterase InhibitorsCholineAcetylcholinesteraseReceptor, Muscarinic M2VasodilationMuscarinic AgonistsDose-Response Relationship, DrugMyasthenia GravisReceptor, Muscarinic M1Vasodilator AgentsMusclesReceptor, Muscarinic M3ParasympathomimeticsMotor EndplateMecamylamineCholine O-AcetyltransferaseAconitineNitroprussideGuinea PigsElectric StimulationMembrane PotentialsCholinergic AgonistsConotoxinsMuscle ContractionParasympatholyticsAzocinesOxotremorineParasympathetic Nervous SystemEndothelium, VascularCobra Neurotoxin ProteinsQuinuclidinyl BenzilateHexamethonium CompoundsCholinergic FibersNeuronsAction PotentialsAgrinCalciumCholinergic AntagonistsN-MethylscopolamineHemicholinium 3ElectrophysiologyMuscle DenervationSynaptic TransmissionDihydro-beta-ErythroidineBicyclo Compounds, HeterocyclicNeostigmineScopolamine HydrobromideMuscle, SmoothIontophoresisRats, Sprague-DawleyNitric OxideQuinolizinesGallamine TriethiodideElectrophorusReceptor, Muscarinic M4NorepinephrineDecamethonium CompoundsIon ChannelsPirenzepineDimethylphenylpiperazinium IodideAmphibian VenomsSynaptic MembranesXenopus laevisIleumKineticsPatch-Clamp TechniquesPotassiumCurareMuscarineMuscle RelaxationNeurotransmitter AgentsRats, WistarPiperidinesHexamethoniumTetrodotoxinCatsRabbitsCells, CulturedDogsGanglia, Autonomic