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Internet Exercise for Chapter 3

Internet Exercise for Chapter 3

Worksheet 3-4: Further Exploration on Digestion (Internet Exercise)

Go to this website to answer questions 1-10: http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/

1. Arrange the organs that make up the digestive system in sequential order starting from
the mouth.

a. anus
b. esophagus
c. stomach
d. small intestine
e. colon

2. The liver and the stomach are considered to be "solid" digestive organs.

a. True
b. False

3. The lower esophageal sphincter closes the passage between the stomach and the
pancreas.

a. True
b. False

4. Which of the following statements regarding factors affecting emptying of the stomach
is/are true? Select all that apply.

a. Carbohydrates spend the longest amount of time in the stomach.
b. The type of food eaten affects the stomach emptying rate.
c. The degree of muscle action of the small intestine affects stomach emptying.
d. Fats remain in the stomach for the longest time period.

5. Starches are digested in a two-step process, whereas sugars are digested in a one-step
process.

a. True
b. False

6. Insoluble fiber takes on a gel-like texture in the intestines, making it easier to
facilitate elimination.

a. True
b. False

7. Protein digestion begins in the stomach.
a. True
b. False

8. Bile acids combine with cholesterol and fatty acids to help fat molecules move into the
cells of the mucosa.

a. True
b. False

9. Which of the following hormones regulate appetite?

a. Ghrelin and peptide YY
b. Gastrin and peptide YY
c. Secretin, CCK, and gastrin
d. Secretin and ghrelin

10. Intrinsic nerves release acetylcholine and adrenaline.

a. True
b. False
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