14. Peristalsis occurs in the digestive tract
a. in the stomach, small intestine, and large intestine only.
b. in the small and large intestines only.
c. in the stomach and small intestine only.
d. from the pharynx to the anus.
____ 15. What kind of movements occur when the smooth muscles contract rythmically in small sections of the tube?
a. mixing movement c. paristalsis movements
b. contractile movements d. parietal movements
____ 16. What kind of smooth muscle movement includes a wavelike motion of contraction behind a mass of food?
a. mixing movement c. peristalsis movement
b. parietal movement d. contrractile movement
____ 17. Digestion of which of the following would be affected the most if the liver were severely damaged?
a. carbohydrates
b. lipids
c. proteins
d. All of these would be affected equally.
____ 18. What constituent of bile has a digestive function?
a. bile salts c. bile pigments
b. cholesterol d. electrolytes
____ 19. Heartburn is usually caused by effects of gastric juice on the
a. small intestine. c. heart.
b. stomach. d. esophagus.