Exam 2: The Digestive System:mechanism for Nourishing the Body

Which regulatory peptide synthesized in the pancreatic and intestinal cells appears to inhibit release of gastrin, secretin, and motilin?

Among the regulatory peptide molecules, some are recognized as true hormones. Which of the following is a paracrine rather than a hormone?

What percentage of urea produced in the body is converted to ammonia by bacteria in the colon and reabsorbed?

What cells found both in oxyntic glands and pyloric glands of the stomach secrete hydrochloric acid and intrinsic factor?

Which is NOT a component of saliva?

The major role of gastrin in the GI tract is that of _____.

The product(s) of pepsin's action is/are _____.

What percentage of cholesterol in bile is used to form chylomicrons?

The majority of the pancreatic tissue is _____.

Which of the mechanisms responsible for absorption of nutrients into the epithelial cell of the villus requires energy?

One of the major molecules absorbed from the colon is water and one liter of chyme entering the large intestine is normally reduced to _____.

All of the following are involved in satiety and suppression of food intake EXCEPT _____.

Which of the following is NOT considered an accessory organ?

Which of the following peptides stimulates appetite?

When the pH of the stomach is increased to avoid GERD, over time the stomach may not be acidic enough. Which of the following might occur?

Which of the following is enterohepatically circulated?

Of the 3 short-chain fatty acids created by gut bacteria, which one is the preferred energy source for colonic epithelial cells?

What cells found in oxyntic glands in the body of the stomach secrete pepsinogens?

39 15. The parietal cells secrete _____.

Pepcid, a drug that is classified as a H₂ receptor antagonist, acts by _____.