Digestive System MCQ Questions and Answers for Practice

1. What constituent of bile has a digestive function?

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

2. Heartburn is usually cause

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

3. 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

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

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

5. The salivary enzyme amylase functions to digest

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

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

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

7. 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

8. Gastric juices in the stomach

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

9. What kind of movements occur when the smooth muscles contract rythmically in small sections of the tube?

1. mixing movement
2. contractile movements
3. paristalsis movements
4. parietal movements

10. What kind of smooth muscle movement includes a wavelike motion of contraction behind a mass of food?

1. mixing movement
2. parietal movement
3. peristalsis movement
4. contrractile movement

11. Mechanical digestion begins in the:

1. mouth
2. stomach
3. small intestine
4. large intestine

12. Chemical digestion of starch foods begins in the

1. mouth
2. stomach
3. small intestine
4. large intestine

13. Chemical digestion of protein begins in the

1. mouth
2. stomach
3. small intestine
4. large intestine

14. Which of the following is NOT a secretory cell in the alimentary canal?

1. Mucous cell
2. Parietal cell
3. Kupffner cell
4. Chief cell

15. The correct sequence for the layers within the wall of the alimentary canal from inside to outside is

1. mucous membrane, muscular layer, serous layer, submucosa
2. mucous membrane, submucosa, muscular layer, serous layer
3. submucosa, mucous membrane, serous layer, muscular layer
4. serous layer, muscular layer, mucous membrane, submucosa