Select the correct statement about the regulation of gastric secretion.
A) Vagus stimulation of the stomach results in decreased secretion of gastric juice.
B) The presence of food in the stomach prevents hormonal control of gastric secretion.
C) Gastric secretion can be stimulated before food has entered the mouth.
D) Gastric secretion is enhanced by very low pH (below a pH of 2).

Question

Quizplus · Accepted Answer

Gastric secretion can be stimulated by the sight, smell, and taste of food even before it enters the mouth. This is known as the cephalic phase and is regulated by the vagus nerve.

Answer: D
 Gastric secretion is enhanced by a low pH because it stimulates the release of gastrin, a hormone that promotes the secretion of gastric acid. However, gastric acid secretion is inhibited at a pH below 2 because it can damage the lining of the stomach.

Select the Correct Statement About the Regulation of Gastric Secretion