NeuronsMusclesNeurons, AfferentMuscle ProteinsMuscle, SmoothMotor NeuronsMuscle, SkeletalMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentMuscle ContractionAction PotentialsMuscle FatigueMuscle DenervationMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchCells, CulturedElectric StimulationMyocytes, Smooth MuscleMitochondria, MuscleOculomotor MusclesNeck MusclesMuscle SpindlesMuscle, StriatedElectrophysiologyDopaminergic NeuronsMuscle RelaxationRespiratory MusclesMuscle WeaknessMembrane PotentialsPapillary MusclesPatch-Clamp TechniquesTime FactorsAxonsCalciumSynapsesAbdominal MusclesRats, WistarGABAergic NeuronsElectromyographySynaptic TransmissionQuadriceps MuscleMuscle CellsImmunohistochemistryMasseter MuscleSpinal CordHippocampusGanglia, SpinalCatsSensory Receptor CellsFacial MusclesNerve Tissue ProteinsMasticatory MusclesAnimals, NewbornDendritesIntercostal MusclesMuscular AtrophyRats, Sprague-DawleyOlfactory Receptor NeuronsMice, Inbred C57BLNeural InhibitionCerebral CortexNeurons, EfferentCholinergic NeuronsIsometric Contractiongamma-Aminobutyric AcidSatellite Cells, Skeletal MuscleMotor Neuron DiseaseRNA, MessengerModels, NeurologicalMice, TransgenicPectoralis MusclesSignal TransductionBrainHindlimbNeuropeptidesMedulla OblongataTetrodotoxinMuscular DiseasesPyramidal CellsCell DifferentiationInterneuronsMice, KnockoutRabbitsMesencephalonExcitatory Postsynaptic PotentialsDopaminePsoas MusclesAfferent PathwaysDose-Response Relationship, DrugGene Expression RegulationSerotonergic NeuronsMyofibrilsGlutamic AcidTemporal MuscleNeuromuscular JunctionCell CountPhysical StimulationEvoked PotentialsGene Expression Regulation, Developmental