Question

question 13
1 pts
which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food?
intestinal phase
cephalic phase
gastric phase
all of the above
question 14
1 pts
which of the following is not a function of the liver?
detoxification
secretion of insulin
storage of iron and vitamins
production of bile
question 15
1 pts
bicarbonates are useful in the gl tract to:
neutralize hydrochloric acid.
break down fats.
activate secretin.
activate pepsin.

Explanation:

Question 13

The cephalic phase of gastric secretion is initiated by the sight, taste, smell, or thought of food. The intestinal phase is triggered by food entering the intestine, and the gastric phase by food in the stomach. So the sight, taste, and smell of food stimulate the cephalic phase.

The liver functions in detoxification, storage of iron and vitamins, and production of bile. Insulin is secreted by the pancreas, not the liver. So secretion of insulin is not a liver function.

Bicarbonates in the GI tract (e.g., from the pancreas) neutralize hydrochloric acid from the stomach. Bile breaks down fats, secretin is activated by acidic chyme, and pepsin is activated by HCl. So bicarbonates neutralize HCl.

Answer:

B. Cephalic phase

Question 14