Which is TRUE regarding the three phases of the control of HCl secretion?

Question

Quizplus · Accepted Answer

During the intestinal phase, an increase in osmolarity of the contents of the duodenum activates the enterogastric reflex which inhibits the secretion of HCl. This is because an increase in osmolarity indicates that food is being digested and absorbed in the small intestine, so there is no need to continue acid secretion in the stomach. Distension of the stomach in the gastric phase actually stimulates the secretion of HCl. Increased nutrient concentration in the duodenum during the cephalic phase does not directly stimulate HCl secretion, but rather stimulates the release of gastrin which then stimulates HCl secretion. Increased peptide concentration in the stomach would actually stimulate HCl secretion. There is no known substance called H⁺ that affects the secretion of HCl.

Which Is TRUE Regarding the Three Phases of the Control