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 NodeMyosin Heavy ChainsElectric StimulationMitochondria, MuscleMuscle SpindlesPsoas MusclesDietary FiberNeuromuscular JunctionSarcomeresOculomotor MusclesMuscular AtrophyCalciumMuscular DiseasesTime FactorsMuscle RelaxationRabbitsMuscle, StriatedHeart BlockRana pipiensMembrane PotentialsMuscle WeaknessPurkinje FibersElectrophysiologyNeck MusclesThoracicaDiaphragmAnuraAxonsPapillary MusclesMyocytes, Smooth MuscleHindlimbMasseter MuscleSatellite Cells, Skeletal MuscleMuscular Dystrophy, AnimalMineral FibersQuadriceps MuscleMuscle CellsNerve Fibers, MyelinatedRespiratory MusclesMice, Inbred mdxMyosinsMasticatory MusclesIntercostal MusclesElectrocardiographyMedian NerveAbdominal MusclesBiomechanical PhenomenaFacial MusclesBone ConductionPeripheral NervesMotor EndplateHistocytochemistryCatsSarcoplasmic ReticulumRefractory Period, ElectrophysiologicalSarcolemmaDogsCotton FiberPectoralis MusclesMicroscopy, ElectronRats, WistarUlnar NerveCardiac Pacing, ArtificialSciatic NerveDystrophinHeart AtriaRegenerationRana esculentaMyocardiumModels, BiologicalNeurons, AfferentArrhythmias, CardiacNADH Tetrazolium ReductaseCells, CulturedElectric ConductivityHeartRats, Sprague-DawleyKineticsMyoblasts