Susan Algert
FACS 113

Study Guide for Digestion and Absorption

Short answer:

1. Identify the structures and explain the functions of the various organs that make up the digestive system.

2. Identify the digestive enzymes and any cofactors secreted by the following glands and organs:
a. salivary b. mucosal (in stomach) c. intestinal d. pancreatic e. liver
What activity do they perform on fats, protein, and carbohydrates?
What stimulates thier release and what inhibits their activity?

3. Describe the structure and function of villi, microvili, blood and lymph.

Multiple choice:

1. Which enzyme is not paired with the appropriate production/secretion organ?
a. sucrase/small intestine b. trypsionogen/small intestine c. lipase/pancreas d. bile/liver

2. The pyloric sphincter is located between the:
a. stomach and esophagus b. stomach and duodenum c. ileum and cecum d. ascending colon and descending colon

3. Most of the digestion that occurs in the large intestine is cuased by:
a. lipase b. pepsin c. saliva d. bacteria

4. Gastrin, secretin, CCK and Gastric Inhibitory Peptide are examples of:
a. enzymes b.hormones c. active absorption d. none of the above

5. In addition to enzymes, what chemical is contained in pancreatic juice?
a. bicarbonate b. hydrochloric acid c. bile d. cholecystekinin (CCK)

6. Ingestion of which type of food would stimulate hydrolysis in the mouth?
a. eggs b. milk c. bread d. lollipop

7. Which organ does not contribute any enzymes to digestion?
a. mouth b. gallbladder c. stomach d. pancreas

8. The stomach lining is protected from the acid environment in the stomach by:
a. bicarbonate that is secreted by the pancreas into the stomach b. bile that emulsifies the acid in the stomach
c. mucus that is secreted by the stomach cells d. pH enhancers that are secreted by the esophagus

9. Which would require energy for absorption?
a. amino acids b. glucose c. alcohol d. water

10. Which is the result of fat entering the small intestine?
a. the gallbladder relaxes b. the esophogeal sphincter relaxes c. Cholecystokinin is produced d. bile is secreted from the liver to the gallbladder