PeristalsisIntestine, LargeIntestine, SmallIntestinesEsophagusManometryDeglutitionColonGastrointestinal MotilityIntestinal MucosaCecumIleumDigestive SystemEsophageal Motility DisordersEsophageal Sphincter, LowerEnteric Nervous SystemPressureUreterJejunumMuscle, SmoothIntestinal NeoplasmsEsophageal AchalasiaIntestinal AbsorptionMuscle ContractionEsophagogastric JunctionGuinea PigsDigestive System Physiological PhenomenaAirCineradiographyGerm-Free LifeDuodenumStomachDysenteryGastrointestinal ContentsFecesReflex, AbdominalIntestinal DiseasesRespiratory System AbnormalitiesKidney PelvisMyenteric PlexusAtropineFatty Acids, VolatileDeglutition DisordersUrinary Tract Physiological PhenomenaGastrointestinal TransitSenna ExtractSwineIntestinal PolypsGastroesophageal RefluxMethysergideScopolamine HydrobromidePhysiology, ComparativeGastrointestinal TractRectumBrachyspira hyodysenteriaeFermentationSpirochaetales InfectionsSubmucous PlexusCatenanesDigestionTrichuriasisMicrovilliPharynxEsophageal Sphincter, UpperTrichurisStreptomycinHernia, HiatalTissue DistributionPurinergic AntagonistsTetrodotoxinFundoplicationHexamethonium CompoundsDietary FiberMucusApaminAnatomy, ComparativeReflexPhysostigmineBrachyspiraBarium SulfateLaryngeal NervesEsophageal DiseasesOpossumsBornanesStarchMucinsEnterochromaffin Cells