Muscle SpindlesSpindle ApparatusBirefringenceSpermatocytesDipteraOrthopteraMotor Neurons, GammaAnaphaseMusclesMetaphaseMicrotubulesMitosisNeurons, AfferentChromosomesMuscle, SkeletalAnimal Population GroupsCatsMicroscopy, PolarizationMuscle Fibers, SkeletalMasseter MuscleMuscle ContractionVideotape RecordingReflex, StretchProprioceptionMasticatory MusclesUltraviolet RaysMeiosisMotor NeuronsMicroscopy, Phase-ContrastSuccinylcholineOrganoidsAfferent PathwaysMovementKinetochoresMicrocomputersNerve FibersMechanoreceptorsMuscle ProteinsMuscle Fibers, Slow-TwitchMuscle, SmoothCentromereCentrosomeNeural ConductionMuscle Fibers, Fast-TwitchElectromyographyDecerebrate StateKinesinVibrationNeck MusclesIntercostal MusclesJawMuscle, Smooth, VascularMicrotubule-Associated ProteinsSex ChromosomesChromosome SegregationMuscle DevelopmentMuscle DenervationHindlimbOculomotor MusclesTubulinElectric StimulationAction PotentialsMad2 ProteinsSpermatozoaNerve EndingsCell Cycle ProteinsMuscle FatigueSpinal Nerve RootsNocodazoleTrigeminal NucleiAurora KinasesEarly Growth Response Protein 3Nuclear Matrix-Associated ProteinsNeurons, EfferentDietary FiberTendonsBiomechanical PhenomenaTime FactorsM Phase Cell Cycle CheckpointsDyneinsAxonsIsometric ContractionReflexKinesthesisReflex, MonosynapticTemporal MuscleTelophaseSpectrum AnalysisDose-Response Relationship, RadiationCytokinesisMyosin Heavy ChainsProtein-Serine-Threonine KinasesGait AtaxiaMitochondria, MusclePostureMyocytes, Smooth MuscleBackMicroscopy, ElectronOocytesMyofibrils