Abdominal MusclesMotor NeuronsMusclesMotor Neuron DiseaseNeuronsMuscle, SkeletalElectromyographyMuscle ContractionRectus AbdominisMuscle ProteinsMuscle, SmoothRespiratory MusclesDiaphragmMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentSurvival of Motor Neuron 1 ProteinMuscle FatigueNeurons, AfferentIntercostal MusclesMotor CortexIntercostal NervesEvoked Potentials, MotorAbdominal WallSurvival of Motor Neuron 2 ProteinMuscle DenervationRespiratory MechanicsPressureAbdomenSpinal CordElectric StimulationMuscle RelaxationAmyotrophic Lateral SclerosisMuscle Fibers, Fast-TwitchNephropidaeRespirationPostureMuscle Fibers, Slow-TwitchMotor ActivityInhalationIsometric ContractionMyocytes, Smooth MuscleMitochondria, MuscleMovementMuscular Atrophy, SpinalOculomotor MusclesNeck MusclesMuscle SpindlesPositive-Pressure Respiration, IntrinsicAction PotentialsMuscle, StriatedAxonsTime FactorsMuscle WeaknessThoraxCells, CulturedLumbosacral RegionAbdominal CavityLaryngeal MusclesLordosisBiomechanical PhenomenaPapillary MusclesSMN Complex ProteinsNeuromuscular JunctionRecruitment, NeurophysiologicalRats, Sprague-DawleyMuscular AtrophyFacial MusclesAstacoideaNerve Tissue ProteinsNeuromuscular DiseasesQuadriceps MuscleHypercapniaExhalationMuscle CellsElectrophysiologyMasseter MusclePhysical StimulationMasticatory MusclesSpinal Nerve RootsImmunohistochemistryMice, TransgenicPhrenic NerveSynapsesPelvisCalciumCoughMolecular Motor ProteinsMembrane PotentialsHindlimbSynaptic TransmissionNerve DegenerationPhysical ExertionSatellite Cells, Skeletal MuscleGanglia, InvertebrateDogsRats, WistarStomachPulmonary VentilationSpine