CurareMuscle RelaxationSpasmSpasms, InfantileMusclesMuscle, SmoothHemifacial SpasmMuscle ContractionRelaxation TherapyTubocurarineMuscle, Smooth, VascularToxiferineMuscle, SkeletalMuscle ProteinsAcetylcholineCoronary VasospasmNeuromuscular JunctionMuscle Fibers, SkeletalEsophageal Spasm, DiffuseNitric OxideVasodilationTissuesMyotonia CongenitaMuscle DevelopmentMuscle FatigueTracheaElectric StimulationSuccinylcholineNeostigmineCyclic GMPFacial MusclesVasodilator AgentsMembrane PotentialsBungarotoxinsHSP20 Heat-Shock ProteinsNeuromuscular BlockadeNitroprussideNeuromuscular Nondepolarizing AgentsErgonovineRelaxationMuscle Fibers, Fast-TwitchReceptors, CholinergicMuscle TonusIsometric ContractionMuscle DenervationPenisElectromyographyMuscle Fibers, Slow-TwitchAnuraTime FactorsGuinea PigsRabbitsEndothelium, VascularCalciumMotor EndplateDiaphragmDose-Response Relationship, DrugMyocytes, Smooth MuscleAngina Pectoris, VariantOpossumsMitochondria, MuscleNeck MusclesNitroglycerinNitroarginineOculomotor MusclesAorta, ThoracicMuscle Relaxants, CentralCyclic GMP-Dependent Protein KinasesNitric Oxide DonorsBiological FactorsIsoproterenolOxadiazolesGuanylate CyclasePapillary MusclesAnal CanalMotor NeuronsRats, Sprague-DawleyMuscle, StriatedBromcresol Greengamma-CyclodextrinsAndrostanolsVasoactive Intestinal PeptideNitric Oxide SynthasePenile ErectionAtropineMuscle SpindlesAortaRespiratory Muscles