Esophageal Sphincter, LowerEsophageal Sphincter, UpperEsophagogastric JunctionManometrySphincter of OddiDeglutitionEsophagusPeristalsisPressureAnal CanalEsophageal AchalasiaGastroesophageal RefluxOpossumsMuscle RelaxationDeglutition DisordersEsophageal pH MonitoringSphincter of Oddi DysfunctionEsophageal Motility DisordersEsophagitisFecal IncontinenceCricoid CartilagePharyngeal MusclesMuscle, SmoothMuscle ContractionUrinary Sphincter, ArtificialMuscle TonusPharynxEsophagoscopyFundoplicationEsophageal DiseasesUrethraFluoroscopyLaryngeal MusclesHernia, HiatalGastrointestinal MotilityStomachAtropineMotilinEsophagitis, PepticDiverticulum, EsophagealDidelphisDilatationGastrinsIrisCommon Bile Duct DiseasesEsophageal StenosisEructationCatsCatheterizationBethanecholHexamethonium CompoundsMethacholine CompoundsReflexAnti-Dyskinesia AgentsAmpulla of VaterLacerationsHydrochloric AcidVagus NervePhentolamineElectric StimulationAnus DiseasesRectumBarrett EsophagusUrodynamicsEndoscopy, GastrointestinalFissure in AnoDogsPropranololPerineumSecretinBaclofenHydrogen-Ion ConcentrationRectal ProlapseUrinary Bladder, NeurogenicVideo RecordingUrinationDefecationLaparoscopyAcetylcholineElectromyographyUrinary BladderSphincterotomy, EndoscopicEndosonographyEpisiotomyUrinary Incontinence, StressArtificial OrgansPylorusTreatment OutcomeNitric OxidePelvic FloorUrination DisordersUrinary IncontinenceCholecystectomyImplantable NeurostimulatorsUrethral DiseasesTime FactorsSpasmTechnetium Tc 99m Disofenin