Enterogastric Reflex: This reflex is 1 of 3 reflexes extrinsic of the digestive tract. This reflex is encouraged by the prevalence of duodenum acid with a pH level of 3-4 or in the stomach at a pH level of 1.5. With stimulus of this reflex, gastrin developed by the G-cells and released in the stomach antrum is shut off. This then prevents gastric motility as well as discharge of gastric acid. Besides the enterogastric reflex, the other 2 of the digestive tract reflexes include the colonoileal reflex and the gastrocolic reflex. The enterogastric reflex activation therefore, causes decrease in motility.
Features for emptying inhibitory are duodenal distension, duodenal acidic pH, sympathetic stimulation, duodenal hypertonicity, and intense pain.
Features for emptying stimulatory are parasympathetic stimulation, increased fluidity and volume of gastric contents.