Myenteric PlexusIleumGuinea PigsChoroid PlexusSubmucous PlexusEnteric Nervous SystemBrachial PlexusMuscle, SmoothMusclesNitrergic NeuronsGastrointestinal MotilityMuscle ContractionInterstitial Cells of CajalNADPH DehydrogenaseMuscle ProteinsCholine O-AcetyltransferaseMuscle, SkeletalColonIntestine, SmallVasoactive Intestinal PeptideMuscle Fibers, SkeletalMuscle, Smooth, VascularHexamethoniumNeuronsElectric StimulationMegacolonGangliaColon, DescendingCalbindin 2Muscle DevelopmentStomachAcetylcholineChoroid Plexus NeoplasmsSubstance PCalbindinsDihydrolipoamide DehydrogenaseS100 Calcium Binding Protein GEsophageal AchalasiaLumbosacral Plexus