Digestive System MCQs Quiz Multiple Choice Questions & Answers

1. What constituent of bile has a digestive function?

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

2. Heartburn is usually cause

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

3. The stomach:

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

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

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

5. The salivary enzyme amylase functions to digest

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

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

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

7. Peristalsis occurs in the digestive tract

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

8. Gastric juices in the stomach

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

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

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

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

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

11. Mechanical digestion begins in the:

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

12. Chemical digestion of starch foods begins in the

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

13. Chemical digestion of protein begins in the

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

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

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

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

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

16. What are the 3 major salivary glands?

1. parotid, submaxillary, and sublingual
2. parotid, submaxillary, and submandibular
3. parathyroid, submandibular, and submaxillary
4. parotid, submandibular, and sublingual

17. The purpose of the intestinal villi is to

1. push the fecal matter into the rectum
2. secrete mucous to facilitate the movement of chyme through the alimentary canal
3. increase surface area for nutrient absorption
4. secrete serous fluid to decrease friction among the organs

18. When the stomach is empty, it folds up into wrinkles called

1. bolus
2. rugae
3. chyme
4. shincters

19. What breaks food into smaller pieces to begin mechanical digestion?

1. esophagus
2. amylase
3. teeth
4. stomach

20. The liver functions to

1. form glucose from noncarbohydrates
2. destroy damage red blood cells
3. All of the choices are correct
4. store vitamin D

21. The accessory digestive organs include all of the following, EXCEPT

1. liver
2. pancreas
3. stomach
4. tongue

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

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

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

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