Digestive System Multiple Choice Questions and Answers

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

16. What are the 3 major salivary glands?

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

17. The purpose of the intestinal villi is to

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

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

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

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

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

20. The liver functions to

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