Respiratory MusclesAir PressureTongueElectromyographyRespiratory MechanicsPharyngeal MusclesIrisAirway ObstructionAirway ResistancePharynxMusclesMiosisPalatal MusclesMuscle, SmoothMuscle ContractionVentilators, Negative-PressureRespiratory SystemSleep Apnea, ObstructiveHypopharynxDiaminesArecolineGanglionectomyLarynxMuscle ProteinsMuscle, SkeletalAirway RemodelingRespirationPalate, SoftPupil DisordersIris DiseasesWakefulnessMuscle, Smooth, VascularMuscle RelaxationMuscle Fibers, SkeletalPupilPirenzepineBethanecholRespiratory Physiological PhenomenaEpiglottisMuscle DevelopmentFuransTracheotomyInhalationParasympatholyticsSleep Apnea SyndromesDilatationPulmonary VentilationPolysomnographyOropharynxBronchiLaryngeal DiseasesElectric StimulationHypoglossal NervePressureMuscle FatigueAcetylcholineLungMuscle Fibers, Fast-TwitchLaryngeal NervesUvulaMuscle DenervationMyocytes, Smooth MuscleNeck MusclesAtropineRespiratory MucosaGlottisContinuous Positive Airway PressureSnoringMuscle Fibers, Slow-TwitchTracheaSleepDose-Response Relationship, DrugDiaphragmNoseTracheostomyTracheal StenosisVasodilationMitochondria, MuscleAsthmaIntubation, IntratrachealLaryngostenosisBronchial HyperreactivityNaphthalenesUpper ExtremityIntercostal MusclesMandibular AdvancementNasal CavityAlkaloidsOculomotor MusclesRats, WistarAirway ManagementMuscle, StriatedFacial MusclesTracheal DiseasesMuscle SpindlesMuscle Weakness