Muscle RelaxationMuscle, SmoothMuscle, Smooth, VascularMuscle ContractionMusclesMyocytes, Smooth MuscleDeuteroporphyrinsTracheaRelaxation TherapyNitric OxideHSP20 Heat-Shock ProteinsCyclic GMPMuscle, SkeletalMuscle ProteinsVasodilationPenisAcetylcholineMuscle TonusOpossumsCyclic GMP-Dependent Protein KinasesNitroprussideBromcresol GreenMuscle Fibers, SkeletalGuinea PigsVasodilator AgentsAortaRabbitsAorta, ThoracicEndothelium, VascularNitric Oxide DonorsCalciumMuscle DevelopmentPenile ErectionDose-Response Relationship, DrugGuanylate CyclaseAnal CanalIsoproterenolElectric StimulationMuscle FatigueRats, Sprague-DawleyOxadiazolesNitric Oxide SynthaseNucleotides, CyclicBiological FactorsVasoactive Intestinal PeptideNitroglycerinMyosin-Light-Chain PhosphataseEnzyme InhibitorsIsometric ContractionPurinonesPhosphodiesterase InhibitorsCells, CulturedNeuromuscular BlockadeCyclic GMP-Dependent Protein Kinase Type IS-NitrosoglutathioneNG-Nitroarginine Methyl EsterNeuromuscular Nondepolarizing AgentsMuscle Fibers, Fast-TwitchRelaxationMuscle DenervationReceptor, PAR-2DogsNorepinephrineAdrenergic beta-AgonistsMuscle Fibers, Slow-TwitchErectile DysfunctionCyclic AMPTime FactorsSignal TransductionRNA, MessengerNitroarginineElectromyographyRats, WistarArginaseArgininePhosphorylationMitochondria, MuscleVasoconstrictionProtoporphyrinsHeme Oxygenase (Decyclizing)Membrane PotentialsPotassium ChannelsMuscle, StriatedOculomotor MusclesNitric Oxide Synthase Type IIINeck MusclesPapillary MusclesPhenylephrineMuscle Relaxants, CentralAndrostanolsgamma-CyclodextrinsMuscle SpindlesRespiratory MusclesNeuromuscular JunctionMesenteric ArteriesMuscle CellsArteriesSmooth Muscle MyosinsMuscle WeaknessKinetics