Muscle Fibers, SkeletalMusclesMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle, SkeletalMuscle ContractionMuscle ProteinsMuscle DevelopmentMuscle, SmoothNerve FibersMuscle DenervationMuscle, Smooth, VascularMyofibrilsRana temporariaMuscle FatigueCalciumIsometric ContractionMitochondria, MuscleMyosin Heavy ChainsPsoas MusclesNeuromuscular JunctionDietary FiberMuscle SpindlesSarcomeresOculomotor MusclesElectric StimulationMuscle RelaxationRana pipiensMuscular AtrophyTime FactorsMuscular DiseasesRabbitsMuscle, StriatedThoracicaMuscle WeaknessMembrane PotentialsMyocytes, Smooth MuscleMotor NeuronsDiaphragmAnuraNeck MusclesMasseter MuscleSarcoplasmic ReticulumSatellite Cells, Skeletal MuscleMuscular Dystrophy, AnimalElectromyographyCells, CulturedMineral FibersQuadriceps MuscleHindlimbRespiratory MusclesPapillary MusclesMotor EndplateMice, Inbred mdxKineticsMasticatory MusclesMyosinsAction PotentialsMuscle CellsAbdominal MusclesRats, WistarIntercostal MusclesBiomechanical PhenomenaRats, Sprague-DawleyFacial MusclesHistocytochemistryMicroscopy, ElectronSarcolemmaCotton FiberPectoralis MusclesHistamine ReleaseAdenosine TriphosphateModels, BiologicalDystrophinRegenerationRanidaeNADH Tetrazolium ReductaseRana esculentaMyoblastsSkeletal Muscle MyosinsActinsRyanodine Receptor Calcium Release ChannelImmunohistochemistryElectrophysiologyCatsCaffeinePotassiumGlycogenTendonsCrustaceaReceptors, CholinergicRNA, MessengerPurkinje FibersDose-Response Relationship, DrugMuscular DystrophiesStress, MechanicalStress FibersMice, Inbred C57BLAcetylcholineProtein Isoforms