Question :
41.Which of the following statements true regarding the timing of : 1357113
41.Which of the following statements is true regarding the timing of meals?
a.Timing of meals is important because the digestive tract is unable to digest foods at certain times.
b.A meal should be consumed immediately before exercise to enhance physical work.
c.Eating a meal late at night is desirable because it facilitates sleep.
d.Timing of meals is important to feeling well.
42.Digestion of macronutrients begins in the mouth with enzyme action on:
a.starches by carbohydrases.
b.proteins by proteases.
c.fats by lipases.
d.a and b
e.a and c
43.The digestive juices in the digestive tract include:
a.gastric juice in the stomach, which has the role of digesting fats.
b.pancreatic juice, which neutralizes stomach acids reaching the small intestine.
c.saliva, which begins the digestion of protein.
d.bile released by the gallbladder to break down carbohydrates in the stomach.
44.The vast majority of fat digestion takes place in the:
a.mouth with lipases secreted in the saliva.
b.stomach with lipases mixed with gastric juices.
c.small intestine with lipases released by the pancreas.
d.large intestine with lipases mixed with water.
45.You have just consumed a meal very high in fat. As a result, hormonal messages will tell an organ to send _____ in amounts matched to the amount of fat present.
a.bile
b.bicarbonate
c.hydrochloric acid
d.mucus
46.As food moves through the digestive tract it spends the most time in the:
a.esophagus because of the slow movement of peristalsis on chewed food.
b.stomach because of the extensive breakdown of carbohydrates and fats.
c.small intestine because of the time it takes to absorb through the villi.
d.large intestine because of the need to partially digest fiber and absorb water.
47.As the villi in the small intestine are exposed to nutrients:
a.they will absorb the greatest percentage possible of every nutrient into the blood.
b.they will deliver minerals into the lymph system for transport.
c.they will absorb partially digested fiber into the blood for delivery to the colon.
d.they will preferentially absorb a greater percentage of deficient nutrients.
48.What are the major roles of the villi and microvilli in the small intestine?
a.The microvilli absorb nutrients into the lymphatic system.
b.The microvilli trap nutrients so the villi cells can absorb them.
c.The villi block toxins from absorption into the blood.
d.The villi complete the breakdown of foods into nutrients.
49.Which of the following would occur in a malnourished child?
a.The absorptive surface of the small intestine would increase in size.
b.The absorptive surface of the small intestine would become more efficient at its job.
c.The absorptive surface of the small intestine would shrink.
d.a and b
e.b and c
50.Which of the following strategies should be used by someone experiencing heartburn?
a.Drink liquids an hour before or after meals.
b.Eat smaller meals.
c.Lie down after meals.
d.a and b
e.b and c
