Muscular Atrophy, SpinalSpinal Muscular Atrophies of ChildhoodSurvival of Motor Neuron 1 ProteinAtrophySMN Complex ProteinsMuscular AtrophySurvival of Motor Neuron 2 ProteinSpinal CordMusclesMuscular Disorders, AtrophicBulbo-Spinal Atrophy, X-LinkedSpinal Cord InjuriesNeuronal Apoptosis-Inhibitory ProteinMuscle, SkeletalMotor NeuronsCyclic AMP Response Element-Binding ProteinAnterior Horn CellsMuscle ProteinsMuscle Fibers, SkeletalMuscle, SmoothRNA-Binding ProteinsNerve Tissue ProteinsMuscle, Smooth, VascularSpinal Cord DiseasesMuscle DevelopmentMuscle ContractionOptic AtrophyMotor Neuron DiseaseRibonucleoproteins, Small NuclearMuscle DenervationMuscle WeaknessDEAD Box Protein 20Disease Models, AnimalElectromyographySpinal Nerve RootsExonsChromosomes, Human, Pair 5Injections, SpinalMuscle Fibers, Fast-TwitchSpinal NervesMuscle FatigueMuscle Fibers, Slow-TwitchCoiled BodiesMultiple System AtrophyAnesthesia, SpinalReceptors, AndrogensnRNP Core ProteinsSpinal Cord NeoplasmsMice, TransgenicSpinal CanalMitochondria, MuscleSpinal DiseasesMyocytes, Smooth MuscleSpinal Cord CompressionNeuromuscular JunctionSpinal NeoplasmsNeck MusclesPedigreePhenotypeOculomotor MusclesNeuromuscular DiseasesMuscle, StriatedMuscular DiseasesMuscle SpindlesBulbar Palsy, ProgressiveNeural ConductionMagnetic Resonance ImagingSpinal StenosisAxonsRespiratory MusclesSpinal FusionMuscle RelaxationContractureCharcot-Marie-Tooth DiseaseNerve DegenerationTime FactorsPapillary MusclesMutationHeterozygote DetectionQuadriceps MuscleCells, CulturedArthrogryposisOlivopontocerebellar AtrophiesGene DeletionAbdominal MusclesGlycine-tRNA LigaseRats, Sprague-DawleyRNA, MessengerMuscle CellsVocal Cord ParalysisHomozygoteHindlimbMasseter MuscleSpinal InjuriesFacial MusclesGyrate AtrophyRNA SplicingMolecular Sequence DataElectric StimulationMasticatory Muscles