Spinal CordMusclesSpinal Cord InjuriesMuscle, SkeletalMuscle ProteinsSciatic NerveMuscle, SmoothSpinal NervesMuscle Fibers, SkeletalMuscle, Smooth, VascularPeripheral NervesMuscle ContractionSpinal Nerve RootsMuscle DevelopmentNerve FibersOptic NerveNerve RegenerationInjections, SpinalMuscle FatigueSpinal Cord DiseasesDevice ApprovalMuscle Fibers, Fast-TwitchMuscle DenervationAnesthesia, SpinalNerve BlockMotor NeuronsMuscle Fibers, Slow-TwitchNerve EndingsTibial NervePeripheral Nerve InjuriesSpinal CanalSpinal Cord NeoplasmsSural NerveMedian NerveNerve CrushSpinal DiseasesElectric StimulationMyocytes, Smooth MuscleSpinal Cord CompressionFacial NerveMitochondria, MuscleNeck MusclesElectromyographyUlnar NerveSpinal NeoplasmsOculomotor MusclesMuscle SpindlesFemoral NerveSpinal StenosisRats, Sprague-DawleyMuscle WeaknessMuscle, StriatedSpinal FusionRespiratory MusclesMuscle RelaxationEquipment DesignPhrenic NerveGanglia, SpinalPapillary MusclesNerve Growth FactorsTrigeminal NerveAxonsHindlimbAbdominal MusclesNerve Growth FactorQuadriceps MuscleRadial NerveNerve Compression SyndromesNeural ConductionCranial NervesMuscle CellsMuscular Atrophy, SpinalFacial MusclesTime FactorsMasseter MuscleNerve TissueSpinal InjuriesIntrauterine DevicesMuscular AtrophyMasticatory MusclesCatsEquipment SafetyIntercostal MusclesIsometric ContractionNeurons, AfferentSpinal Cord IschemiaBiomechanical PhenomenaReflexOphthalmic NerveRabbitsDevice RemovalMandibular NerveNeuromuscular JunctionSatellite Cells, Skeletal MuscleSpineCells, CulturedEquipment and SuppliesRats, WistarParaplegiaSympathetic Nervous System