Neural ConductionMuscle Fibers, SkeletalElectromyographyIsometric ContractionMuscle, SkeletalMusclesMotor NeuronsMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchHeart Conduction SystemMuscle ContractionMuscle ProteinsMuscle DevelopmentMuscle, SmoothNerve FibersMuscle DenervationMuscle, Smooth, VascularMyofibrilsMuscle FatigueRana temporariaAction PotentialsAtrioventricular NodeElectric StimulationMyosin Heavy ChainsMitochondria, MuscleTime FactorsMuscle SpindlesPsoas MusclesDietary FiberNeuromuscular JunctionSarcomeresOculomotor MusclesMuscular AtrophyCalciumMuscular DiseasesMuscle RelaxationRabbitsHeart BlockMuscle, StriatedRana pipiensMembrane PotentialsElectrophysiologyMuscle WeaknessPurkinje FibersNeck MusclesThoracicaAnuraDiaphragmAxonsPapillary MusclesMyocytes, Smooth MuscleHindlimbMasseter MuscleSatellite Cells, Skeletal MuscleMuscular Dystrophy, AnimalMineral FibersQuadriceps MuscleMuscle CellsNerve Fibers, MyelinatedRespiratory MusclesElectrocardiographyMice, Inbred mdxMyosinsMasticatory MusclesIntercostal MusclesMedian NerveAbdominal MusclesBiomechanical PhenomenaFacial MusclesPeripheral NervesBone ConductionMotor EndplateHistocytochemistryCatsRefractory Period, ElectrophysiologicalDogsSarcoplasmic ReticulumSarcolemmaCardiac Pacing, ArtificialCotton FiberMicroscopy, ElectronRats, WistarPectoralis MusclesModels, BiologicalUlnar NerveSciatic NerveHeart AtriaRegenerationCells, CulturedMyocardiumDystrophinRana esculentaRats, Sprague-DawleyArrhythmias, CardiacNeurons, AfferentKineticsHeartElectric ConductivityNADH Tetrazolium ReductaseMyoblasts