During the cephalic phase of gastric secretion,
A) the stomach responds to distention and a decrease in pH.
B) the release of secretin inhibits parietal and chief cell action.
C) the parasympathetic division of the ANS is active.
D) the intestinal reflex inhibits gastric emptying.
E) local reflexes in the submucosal and myenteric plexuses activate.

Question

Quizplus · Accepted Answer

During the cephalic phase of gastric secretion, the parasympathetic division of the ANS is activated, which stimulates the release of gastric juice. This occurs in response to the mere sight, smell, taste, or thought of food, even before food reaches the stomach. The release of secretin occurs during the intestinal phase and inhibits gastric acid secretion. The intestinal reflex may inhibit gastric emptying, but this is not part of the cephalic phase. Local reflexes in the submucosal and myenteric plexuses are also activated during the gastric phase, not the cephalic phase.

During the Cephalic Phase of Gastric Secretion