Biology 2542 – Lecture
Chapter 24 (Digestive System)
Practice Quiz
I. Circle the letter preceding the one best answer to each question:
1. Which of these organs is not part of the GI tract, but is an accessory structure?
A. Mouth
B. Gall bladder
C. Stomach
D. Small intestine
2. All of the following are chemicals produced by the pancreas except:
A. Amylase
B. Bicarbonate
C. Trypsinogen
D. Pepsinogen
3. Which of the following is a hormone, not an enzyme?
A. Lipase
B. Gastrin
C. Pepsin
D. Trypsin
E. Esophagus
E. Procarboxypeptidase
E. Carbonic anhydrase
4. All of the following are enzymes involved in protein digestion except:
A. Amylase
B. Trypsin
C. Carboxyeptidase D. Pepsin
E. Chymotrypsin
II. Arrange the answers in correct sequence:
______, ______, _____ 5. Arrange from greatest to least in number in a complete set of adult dentition:
A. Molars
B. Premolars
C. Canines
____, ____, ____, ____ 6. GI tract wall, from inside to outside of the wall:
A. Mucosa
B. Muscularis
C. Serosa
D. Submucosa
___, ___, ___, ___, ___ 7. Pathway of chyme: A. Ileum B. Jejunum C. Cecum D. Duodenum E. Pylorus
___, ___, ___, ___, ___ 8. Pathway of wastes: A. Ascending colon B. Transverse colon C. Sigmoid colon
D. Descending colon E. Rectum
III. Circle T (True) or F (False). If the statement is false, cross out the word(s) that make it false and
write in an appropriate correction so that the statement now becomes a true statement.
T F 9. In general, the parasympathetic nervous system stimulates secretion of the salivary glands.
T F 10. The principal chemical activity of the stomach is to begin digestion of protein.
T F 11. Although the pancreas is an accessory organ of digestion, its major function is as an endocrine organ.
T F 12. Bile is made in both the liver and the gall bladder.
IV. Using the blanks provided, fill-in the word or phrase that best fits the description given:
_____________________13. Location where chief cells, parietal cells, mucous cells, and G cells are all found.
_____________________14. Villi, circular folds, and the jejunum are all parts of this portion of the GI tract.
_____________________15. Overall, these are the six basic processes performed by the Digestive System
_________________, _________________, ________________, _______________, and ________________.
_____________________16. This is the clinical specialty that deals with diseases of the stomach and intestines.
Biology 250 – Lecture
Chapter 24 Practice Quiz - continued
Page Two
________________: ______________ 17. These are the three major nutrient categories and the product(s)
________________: ______________
of chemical digestion of each.
________________: ______________
V. For extra review, try the following. First, name the secretion involved with digestion. Then, if
there is a blank line at the end of the description, indicate whether the secretion is classified as an
enzyme (E), a hormone (H), or neither of these (N).
The first one is done for you:
___CCK_____18. Causes contraction of the gallbladder (__H___)
____________19. Stimulates production of alkaline pancreatic fluids (______)
____________20. Increases gastric activity (secretion and motility) (______)
____________21. Active forms of ALL protein-digesting enzymes (seven answers are required here)
____________, ______________, _____________, _____________, ____________, and _____________.
____________22. Activates pepsinogen to pepsin (______)
____________23. A storage form of carbohydrate (______)
____________24. Starch-digesting enzyme secreted by the salivary glands and the pancreas
____________25. Intestinal enzymes that complete carbohydrate catabolism, resulting in simple sugars
____________26. Digest DNA and RNA (______)
____________27. Stimulates pancreatic production of secretions rich in lipase and amylase (______)