61.Which of the following is generally NOT digested but does stimulate intestinal muscle contractions?

a.bile

b.fibre

c.starch

d.amylase

62.Which of the following is the most important function of fibre in digestive health?

a.It provides energy (Calories) through bacterial fermentation in the colon.

b.It increases fecal bulk and stimulates intestinal muscle contractions.

c.It supports the elimination of cholesterol in stools.

d.It helps rid the body of contaminants.

63.What is the function of bile?

a.emulsify fats

b.initiate digestion of protein

c.enhance absorption of complex carbohydrates

d.protect the stomach and small intestine from the action of hydrochloric acid

64.Nancy has stones that are blocking bile release from her gallbladder.  What is likely to be the main response to her problem?

a.impaired fat digestion

b.impaired carbohydrate digestion

c.impaired protein digestion

d.impaired CCK release

65.Which of the following mechanisms is an important function of the intestinal villi crypts?

a.synthesis of chylomicrons

b.secretion of juices into the small intestine

c.synthesis of fragments of fat for use by the colon

d.transport of fat-soluble nutrients into the circulation

66.What is the name of the projections on the inner surface of the small intestine?

a.villi

b.cilia

c.mesenteric vessels

d.vascular projectiles

67.Which of the following is a function of the intestinal microvilli?

a.secretion of bile salts

b.secretion of digestive acid

c.transport of nutrient molecules

d.transport of pancreatic enzymes

68.Which of the following is the primary site for absorption of nutrients?

a.crypt

b.villus

c.microvillus

d.macrovillus

69.Which of the following are found on the microvilli and function to break apart small nutrients into the final products of digestion?

a.mucus

b.micelles

c.enzymes

d.hormones

70.Which mechanism directly accounts for the absorption of some nutrients by intestinal cells?

a.dilution

b.transmigration

c.active transport

d.facilitated diversion