FasciculationExtremitiesMuscular Dystrophy, OculopharyngealForelimbAtrophyMusclesMuscle, SkeletalMuscular AtrophyAxonsElectromyographyMuscle ProteinsMuscle Fibers, SkeletalMuscle ContractionLimb BudsMuscle DevelopmentSuccinylcholineMuscle, SmoothContactin 2Motor NeuronsMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchCell Adhesion Molecules, NeuronalHindlimbMuscle CrampMuscle FatigueOptic AtrophyCell Adhesion Molecules, Neuron-GliaNeuromuscular DiseasesOculomotor MusclesMuscular Atrophy, SpinalMuscle WeaknessChick EmbryoMasticatory MusclesLower ExtremityRespiratory MusclesLegMuscle DenervationDiaphragmSemaphorin-3AMitochondria, MuscleNeck MusclesLeukocyte L1 Antigen ComplexAbdominal MusclesNeural Cell Adhesion Molecule L1Masseter MuscleNeuropilin-1Quadriceps MuscleNeural Cell Adhesion MoleculesMultiple System AtrophyNeurologic ManifestationsIsometric ContractionNeuritesMuscular DiseasesGene Expression Regulation, DevelopmentalMotor Neuron DiseaseMuscle SpindlesMyosin Heavy ChainsArmNerve Tissue ProteinsNervous SystemUpper ExtremityMyocytes, Smooth MuscleBiomechanical PhenomenaTime FactorsSpinal Muscular Atrophies of ChildhoodAbducens NerveFacial MusclesIntercostal MusclesContactinsLocomotionLimb SalvageCranial NervesNADH Tetrazolium ReductaseMuscle, StriatedAmyotrophic Lateral SclerosisLimb Deformities, CongenitalNeurons, AfferentVomeronasal OrganMuscle RelaxationCells, CulturedBody PatterningPapillary MusclesElectric StimulationGrowth ConesNeural PathwaysNeuropilin-2ImmunohistochemistryBrain