Role of stomach regions and duodenum in the formation of electrical activity of gastroduodenal complex.

Functional activity of components of the gastroduodenal complex (gastric cardia, gastric corpus, pylorus, and duodenal bulb) was studied in 4 series of acute experiments. One of these regions was subjected to electrical stimulation in each series. Our results suggest that the cardia possesses rhythm-forming properties, the corpus plays a system-organizing role, the pylorus plays a trigger role, and the duodenal bulb produce synchronizing effects.