Muscle RelaxationConnective TissueMuscle, SmoothMusclesMuscle ContractionRelaxation TherapyMuscle, Smooth, VascularConnective Tissue DiseasesMuscle, SkeletalMuscle ProteinsConnective Tissue Growth FactorMuscle Fibers, SkeletalNitric OxideMuscle DevelopmentVasodilationConnective Tissue CellsMuscle FatigueTracheaCyclic GMPDeuteroporphyrinsMixed Connective Tissue DiseaseAcetylcholineHSP20 Heat-Shock ProteinsNeuromuscular BlockadeNitroprussideElectric StimulationRabbitsNeuromuscular Nondepolarizing AgentsVasodilator AgentsIsometric ContractionMuscle Fibers, Fast-TwitchRelaxationMuscle DenervationPenisCalciumDose-Response Relationship, DrugEndothelium, VascularMuscle Fibers, Slow-TwitchMuscle TonusGuinea PigsElectromyographyMyocytes, Smooth MuscleTime FactorsOculomotor MusclesRats, Sprague-DawleyMitochondria, MuscleOpossumsAorta, ThoracicRats, WistarNitroarginineIsoproterenolCyclic GMP-Dependent Protein KinasesNitric Oxide DonorsBiological FactorsOxadiazolesNeck MusclesPapillary MusclesGuanylate CyclaseAortaAnal CanalMuscle, StriatedVasoactive Intestinal PeptideNitric Oxide SynthaseBromcresol GreenAndrostanolsgamma-CyclodextrinsPenile ErectionMuscle SpindlesDogsBiomechanical PhenomenaRespiratory MusclesRNA, MessengerEnzyme InhibitorsMuscle Relaxants, CentralNeuromuscular JunctionMuscle WeaknessNG-Nitroarginine Methyl EsterCells, CulturedNitroglycerinAtracuriumMuscle CellsMyocardial ContractionMyotonia CongenitaAbdominal MusclesPhenylephrineMembrane PotentialsSignal TransductionQuadriceps MuscleKineticsParvalbuminsImmunohistochemistryAdrenergic beta-AgonistsVecuronium BromideMasseter MuscleVasoconstrictionArginineMyosin-Light-Chain PhosphataseNucleotides, CyclicMolecular Sequence DataFacial Muscles