Which of the following statements about Secretin is true?
1) It is structurally similar to insulin.
2) It is structurally similar to glucagon.
3) It stimulates the release of hydrochloric acid by the stomach.
4) It is secreted in response to high blood glucose levels.

What is the role of the area postrema in the regulation of food intake?
1) It senses the presence of food in the stomach
2) It detects the nutritional content of food
3) It is involved in the detection of toxins and the initiation of vomiting
4) It directly stimulates the release of hunger hormones

Which of the following is NOT a primary bile acid synthesized in the liver from cholesterol?
1) Cholic acid
2) Chenodeoxycholic acid
3) Deoxycholic acid
4) Lithocholic acid

Which of the following is NOT a function of the submucosal plexus in the gastrointestinal tract?
1) Controlling local blood flow
2) Regulating the motility of the gastrointestinal tract
3) Secretion of gastrointestinal hormones
4) Controlling the contractions of the longitudinal muscle layer
E) Stimulating the release of digestive enzymes

What is the primary function of the parasympathetic nervous system?
1) Control of sympathetic nervous system
2) Control of visceral functions during rest and digestion
3) Control of musculoskeletal system during rest
4) Control of sensory systems during stress