61) Which gastrointestinal hormone is released when fats and glucose enter the small intestine?

A) cholecystokinin

B) gastrin

C) secretin

D) pepsin

E) gastric inhibitory peptide

62) Duodenal endocrine cells

A) carry products of digestion that will not pass through the walls of blood capillaries.

B) produce new cells for the mucosa of the small intestine.

C) function in the absorption of nutrients.

D) produce various peptide hormones that coordinate the secretory activities of other digestive organs.

E) secrete a watery intestinal juice.

63) Which gastrointestinal hormone targets the pancreas and stimulates the release of insulin by the islets?

A) gastrin

B) gastric inhibitory peptide

C) secretin

D) cholecystokinin

E) pepsinogen

64) The portion of the small intestine that is closest to the stomach is the

A) ileum.

B) colon.

C) cecum.

D) jejunum.

E) duodenum.

65) The portion of the small intestine that performs the bulk of chemical digestion and nutrient absorption is the

A) ileum.

B) duodenum.

C) jejunum.

D) pylorus.

E) cecum.

66) The longest portion of the small intestine is the

A) cecum.

B) appendix.

C) ileum.

D) jejunum.

E) duodenum.

67) Which of the following is a gastrointestinal hormone that increases the rate of bile secretion by the liver?

A) cholecystokinin

B) gastrin

C) gastric inhibitory peptide

D) pepsin

E) secretion

68) Which gastrointestinal hormone is released when the pH in the duodenum falls as acidic chyme arrives from the stomach?

A) HCl

B) gastric inhibitory peptide

C) cholecystokinin

D) secretin

E) gastrin

69) Most nutrient absorption takes place in the ________.

A) small intestine

B) mouth

C) stomach

D) ascending colon

E) sigmoid colon

70) Lacteals are found in the ________.

A) liver lobules

B) stomach rugae

C) pancreatic islets

D) esophageal adventitia

E) small intestinal villi