The duodenojejunal junction and Treitz ligament in the regulation of duodenal emptying.

In chronic experiments in dogs the evacuatory and absorptive duodenal functions and the level of duodenogastric reflux (DGR) in sham-operated dogs and dogs with transected Treitz ligament (TL) and resected duodenojejunal junction (DJJ) were studied. The electrophysiologic characteristics of the antrum, duodenum, and DJJ in sham-operated dogs were examined. It was shown that there is a coordination of gastric and duodenal solid carbohydrate food emptying.

[Electric activity of the proximal part of the digestive tract in the normal state and after pyloroplasty and transsection of the ligament of Treitz in dogs].

It is shown that the normal amplitude-frequency characteristics of the duodenojejunal flexure differ from those of the duodenum. After pyloroplasty, the electrical activity of the antrum do not change. At the region of the duodenojejunal flexure, the intensification of the electrical activity, increase in the amplitude, frequency of the slow wave and peak potentials occur.