SpasmMuscle RelaxationSpasms, InfantileMusclesMuscle, SmoothMuscle SpasticityNeck MusclesHemifacial SpasmMuscle ProteinsMuscle, Smooth, VascularMuscle, SkeletalMuscle ContractionMuscle Fibers, SkeletalCervical AtlasOccipital BoneNeuromuscular AgentsMuscle DevelopmentElectromyographyCoronary VasospasmSpinal Cord InjuriesBotulinum Toxins, Type AMuscle FatigueMotor NeuronsEsophageal Spasm, DiffuseDeltoid MuscleRelaxation TherapyMuscle Fibers, Fast-TwitchMuscle DenervationFacial MusclesMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleTennisMitochondria, MuscleOculomotor MusclesMuscle, StriatedByssinosisMuscle SpindlesPapillary MusclesErgonovineRespiratory MusclesMuscle WeaknessIsometric ContractionAcetylcholineAbdominal MusclesTracheaTime FactorsAngina Pectoris, VariantElectric StimulationMuscle CellsQuadriceps MuscleNitric OxideMasticatory MusclesVasodilationMasseter MuscleRabbitsCalciumBiomechanical PhenomenaIntercostal MusclesTextile IndustryMuscular AtrophyVasodilator AgentsCyclic GMPSatellite Cells, Skeletal MuscleRespiration DisordersGuinea PigsPectoralis MusclesMuscle Relaxants, CentralRats, Sprague-DawleyContractureDose-Response Relationship, DrugDeuteroporphyrinsClaudin-5Muscular DiseasesNitroprussideNeuromuscular JunctionTemporal MuscleNeuromuscular BlockadeHSP20 Heat-Shock ProteinsPsoas MusclesMyofibrilsEndothelium, VascularNeuromuscular Nondepolarizing AgentsRats, WistarDustShoulderPenisHindlimbAortaBlepharospasmMuscle TonusCells, CulturedPharyngeal MusclesRelaxationAorta, ThoracicNitroglycerinMassageAsthmaTight JunctionsMyosin Heavy ChainsVasoconstriction