Muscle RelaxationNeuromuscular JunctionPotassiumMuscle, SmoothMusclesMuscle ContractionRelaxation TherapyMuscle, Smooth, VascularPotassium ChannelsMuscle, SkeletalMuscle ProteinsSciatic NerveMuscle Fibers, SkeletalVasodilationNitric OxidePeripheral NervesMuscle DevelopmentElectric StimulationMuscle FatigueTracheaNerve FibersAcetylcholineOptic NerveCyclic GMPPotassium Channel BlockersDeuteroporphyrinsCalciumGuinea PigsNitroprussideHSP20 Heat-Shock ProteinsVasodilator AgentsNeuromuscular BlockadeRabbitsMembrane PotentialsDose-Response Relationship, DrugPotassium Channels, Inwardly RectifyingPotassium ChlorideNerve RegenerationNeuromuscular Nondepolarizing AgentsPenisIsometric ContractionRats, Sprague-DawleyMuscle Fibers, Fast-TwitchRelaxationElectromyographyPotassium, DietaryMuscle DenervationMuscle TonusPotassium DeficiencyPotassium Channels, Voltage-GatedMuscle Fibers, Slow-TwitchEndothelium, VascularNerve EndingsPotassium CompoundsMyocytes, Smooth MuscleNerve BlockRats, WistarNitroarginineOpossumsIsoproterenolMitochondria, MuscleBiological FactorsAorta, ThoracicMedian NerveSural NerveTime FactorsOxadiazolesNitric Oxide DonorsNerve CrushCyclic GMP-Dependent Protein KinasesTibial NerveFacial NerveNeck MusclesOculomotor MusclesVasoactive Intestinal PeptidePeripheral Nerve InjuriesPotassium IsotopesPapillary MusclesUlnar NerveGuanylate CyclaseAnal CanalDogsPenile ErectionNitric Oxide SynthaseMuscle SpindlesAndrostanolsMuscle, StriatedAortaBromcresol Greengamma-CyclodextrinsEnzyme InhibitorsFemoral NerveMuscle Relaxants, CentralRespiratory MusclesNG-Nitroarginine Methyl EsterLarge-Conductance Calcium-Activated Potassium ChannelsKineticsMuscle WeaknessSodiumSpinal Nerves