Digestive System MCQ Questions and Answers Quiz

11. 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

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

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

13. The salivary enzyme amylase functions to digest

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

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

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

15. 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

16. Gastric juices in the stomach

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

17. 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

18. 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

19. Mechanical digestion begins in the:

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

20. Chemical digestion of starch foods begins in the

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