IleumDuodenal NeoplasmsDuodenal DiseasesIntestine, SmallIntestinal MucosaDuodenal ObstructionGastrointestinal MotilityBrunner GlandsGuinea PigsStomachIntestinal AbsorptionMuscle, SmoothJejunumIntestinesMyenteric PlexusDuodenoscopyDuodenitisMuscle ContractionDigestionDigestive SystemIleal DiseasesIleitisColonMyoelectric Complex, MigratingPyloric AntrumPylorusIntestinal SecretionsIleal NeoplasmsPancreasGastrointestinal TransitGastrointestinal ContentsAnimal FeedSecretinSwineAtropineDigestive System Physiological PhenomenaAmpulla of VaterDuodenal UlcerRumenAbomasumGastric EmptyingMicrovilliPancreaticoduodenectomyGastrointestinal TractBicarbonatesPancreatic JuiceEpirizoleCecumHydrochloric AcidEndoscopy, GastrointestinalPeristalsisMotilinIntestinal DiseasesCholecystokininIntestinal FistulaTrimebutineDuodenumRats, WistarEnterocytesIntestine, LargeMuscle RelaxationCommon Bile DuctEnteroendocrine CellsStomach, RuminantEnteric Nervous SystemGastric MucosaDiphenylacetic AcidsIntestinal PerforationEnteropeptidaseS100 Calcium Binding Protein GGastrointestinal HemorrhageSucraseIntestinal NeoplasmsAcetylcholineGastrointestinal HormonesIleocecal ValveSphincter of OddiUpper Gastrointestinal TractGallbladderSuperior Mesenteric Artery SyndromeRats, Sprague-DawleyCattleBarium SulfateRabbitsIntestinal AtresiaMelenaSerous MembraneElectric StimulationCalbindinsChoristomaNitrogenDogsGastric Outlet ObstructionHydrogen-Ion ConcentrationRats, Inbred StrainsJejunal DiseasesSomatostatinomaEnteritisDuodenostomyRNA, Messenger