Digestive System Multiple Choice Questions and Answers

1. By the time food leaves the stomach it is:

1. a creamy paste called chyme
2. rolled into a bolus
3. ready to be mixed with pepsin for protein digestion
4. None of the above

2. What constituent of bile has a digestive function?

1. bile salts
2. cholesterol
3. bile pigments
4. electrolytes

3. Heartburn is usually cause

1. by effects of gastric juice on the small intestine
2. stomach
3. heart
4. esophagus

4. Digestion of which of the following would be affected the most if the liver were severely damaged?

1. carbohydrates
2. lipids
3. proteins
4. All of these would be affected equally

5. The stomach:

1. does chemical digestion only
2. does mechanical digestion only
3. does both chemical and mechanical digestion
4. starts the chemical digestion of starchy foods

6. The gastrointestinal tract (GI tract) includes all of the following, EXCEPT

1. esophagus
2. liver
3. stomach
4. small intestine

7. The salivary enzyme amylase functions to digest

1. fats
2. carbohydrates
3. proteins
4. all of the choices are correct

8. The muscles of the esophagus squeeze the food downward using the process of

1. gravity
2. peristalsis
3. rugae
4. chyme

9. Peristalsis occurs in the digestive tract

1. in the stomach, small intestine, and large intestine only
2. in the small and large intestines only
3. in the stomach and small intestine only
4. from the pharynx to the anus

10. Gastric juices in the stomach

1. kill bacteria
2. work together to digest food
3. include hydrochlorid acid
4. All of the above