Question

The distention of the stomach by food is the primary stimulus to begin the

Select one:
a. cephalic phase of gastric secretion.
b. gastric phase of gastric secretion.
c. intestinal phase of gastric secretion.
d. cystic phase of gastric secretion.
e. hepatic phase of gastric secretion.

Answer 1

The distention of the stomach by food is the primary stimulus to begin the gastric phase of gastric secretion. This phase is characterized by local, hormonal, and neural responses that stimulate secretions and contractions.

Step-by-step explanation:

The distention of the stomach by food is the primary stimulus to begin the gastric phase of gastric secretion.

The gastric phase begins once the food arrives in the stomach and is stimulated by distension of the stomach, a decrease in pH of the gastric contents, and the presence of undigested material. This phase consists of local, hormonal, and neural responses that stimulate secretions and powerful contractions.

Answer 2

B. gastric phase of gastric secretion

Step-by-step explanation:

The gastric phase of gastric secretion is stimulated by distension of the stomach. This distension is caused by the presence of food in the stomach and a decrease in stomach pH. Stomach distention causes the release of acetylcholine which is the first step in releasing stomach juice. After the release of gastric juice, some proteins present in the stomach react with hydrogen ions, the result of this is the increase in pH in this organ. At this point, gastric juice stops being secreted and gastrin is released which stimulates the secretion of gastric acid.