Neural ConductionMuscle Fibers, SkeletalElectromyographyIsometric ContractionMuscle, SkeletalMusclesMotor NeuronsMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchHeart Conduction SystemMuscle ContractionMuscle ProteinsMuscle DevelopmentMuscle, SmoothNerve FibersMuscle DenervationMuscle, Smooth, VascularProtein Sorting SignalsMyofibrilsMuscle FatigueRana temporariaAction PotentialsAtrioventricular NodeElectric StimulationSignal TransductionMyosin Heavy ChainsMitochondria, MuscleMuscle SpindlesPsoas MusclesTime FactorsCalciumDietary FiberNeuromuscular JunctionSarcomeresOculomotor MusclesMuscular AtrophyMuscular DiseasesRabbitsMuscle RelaxationMembrane PotentialsElectrophysiologyMuscle, StriatedHeart BlockRana pipiensMuscle WeaknessPurkinje FibersNeck MusclesThoracicaAxonsAnuraDiaphragmMyocytes, Smooth MusclePapillary MusclesHindlimbMasseter MuscleSatellite Cells, Skeletal MuscleMuscular Dystrophy, AnimalQuadriceps MuscleMineral FibersNerve Fibers, MyelinatedMuscle CellsModels, BiologicalRespiratory MusclesCells, CulturedElectrocardiographyMyosinsMice, Inbred mdxMasticatory MusclesMolecular Sequence DataIntercostal MusclesBiomechanical PhenomenaMedian NerveAbdominal MusclesFacial MusclesDogsPeripheral NervesBone ConductionCatsMotor EndplateHistocytochemistrySarcoplasmic ReticulumRats, WistarRefractory Period, ElectrophysiologicalKineticsSarcolemmaMicroscopy, ElectronCotton FiberRats, Sprague-DawleyPectoralis MusclesMyocardiumUlnar NerveCardiac Pacing, ArtificialSciatic NerveRegenerationNeurons, AfferentImmunohistochemistryAmino Acid SequenceHeart AtriaRNA, MessengerHeart