Digestive System Multiple Choice Questions and Answers for Practice

16. What are the 3 major salivary glands?

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

17. The purpose of the intestinal villi is to

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

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

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

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

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

20. The liver functions to

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

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

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

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

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

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

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