AcetylcholineReceptors, NicotinicReceptors, CholinergicNerve Fibersalpha7 Nicotinic Acetylcholine ReceptorMuscle Fibers, SkeletalBungarotoxinsDietary FiberTorpedoVesicular Acetylcholine Transport ProteinsReceptors, MuscarinicNicotinic AntagonistsMineral FibersMusclesNicotinic AgonistsNeuromuscular JunctionAtropineElectric OrganMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchNicotineCotton FiberPhysostigmineTubocurarineCarbacholMuscle ContractionCholinergic AgentsMuscarinic AntagonistsAcetylcholinesteraseCholineCholinesterase InhibitorsMotor EndplateReceptor, Muscarinic M2Electric StimulationMuscarinic AgonistsVasodilationStress FibersPurkinje FibersReceptor, Muscarinic M1Myasthenia GravisVasodilator AgentsParasympathomimeticsReceptor, Muscarinic M3Choline O-AcetyltransferaseMembrane PotentialsNerve Fibers, MyelinatedMuscle DenervationDose-Response Relationship, DrugMecamylamineCholinergic FibersAconitineNitroprussideMuscle, SkeletalCalciumGuinea PigsConotoxinsCholinergic AgonistsMossy Fibers, HippocampalParasympathetic Nervous SystemAzocinesParasympatholyticsSynaptic TransmissionEndothelium, VascularOxotremorineNeuronsHexamethonium CompoundsCobra Neurotoxin ProteinsAction PotentialsQuinuclidinyl BenzilateRats, Sprague-DawleyTime FactorsAgrinHemicholinium 3N-MethylscopolamineMuscle, SmoothCholinergic AntagonistsCatsBicyclo Compounds, HeterocyclicDihydro-beta-ErythroidineIontophoresisScopolamine HydrobromideNeostigmineGallamine TriethiodideDecamethonium CompoundsNitric OxideElectrophorusRats, WistarDiaphragmRabbitsQuinolizinesReceptor, Muscarinic M4NorepinephrineIon ChannelsSynapsesSynaptic MembranesKineticsNerve EndingsMuscle RelaxationIleumXenopus laevis