Which statement regarding the regulatory controls of the intestinal phase of gastric secretion is true?
A) Neural controls are excitatory, but endocrine controls are inhibitory.
B) Endocrine controls are excitatory, but neural controls are inhibitory.
C) There are no regulatory controls during the intestinal phase.
D) Most neural and endocrine controls are excitatory.
E) Most neural and endocrine controls are inhibitory.

Question

Quizplus · Accepted Answer

During the intestinal phase of gastric secretion, most neural and endocrine controls are inhibitory. This is because as the chyme enters the small intestine, the pH drops and the presence of nutrients and partially digested food triggers a negative feedback loop to slow down gastric secretion and emptying, allowing for proper digestion and absorption in the small intestine. Excitatory signals are present during the cephalic and gastric phases of gastric secretion, but are suppressed during the intestinal phase.

Which Statement Regarding the Regulatory Controls of the Intestinal Phase