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1 | |
The function(s) of the digestive system is (are) ______ . |
| | A) | to ingest food |
| | B) | to digest food to small nutrients molecules that can pass through membranes |
| | C) | to absorb nutrient molecules |
| | D) | to eliminate indigestible remains |
| | E) | all of the above |
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2 | |
Starch digestion begins ____________ with the addition of salivary amylase to food particles. |
| | A) | in the mouth |
| | B) | in the esophagus |
| | C) | in the stomach |
| | D) | in the small intestine |
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3 | |
What does the crown of a tooth consist of? |
| | A) | enamel |
| | B) | dentin |
| | C) | pulp |
| | D) | enamel, dentin, and pulp |
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4 | |
Swallowing is a ___________ that occurs in the ____________ and includes the closing off of the nasopharyx by the _____________. |
| | A) | voluntary action; larynx; Adam's apple |
| | B) | reflex action; pharynx; soft palate |
| | C) | voluntary action; mouth; epiglottis |
| | D) | reflex action; soft palate; glottis |
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5 | |
The ______ conducts the chewed bolus of food from the pharynx to the stomach. |
| | A) | esophagus |
| | B) | trachea |
| | C) | intestine |
| | D) | glottis |
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6 | |
Food is moved through the digestive system by wave-like muscular contractions called _____. |
| | A) | peristalsis |
| | B) | bolus |
| | C) | chyme |
| | D) | defecation |
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7 | |
The lumen of the digestive tract is lined with ______ . |
| | A) | serosa |
| | B) | mucosa |
| | C) | submucosa |
| | D) | muscularis |
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8 | |
In the stomach, HCl in gastric juice ______ . |
| | A) | kills bacteria |
| | B) | breaks down the connective tissue of meat |
| | C) | activates pepsin |
| | D) | all of the above |
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9 | |
Food leaving the stomach is called ________. |
| | A) | a bolus |
| | B) | rhyme |
| | C) | chyme |
| | D) | feces |
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10 | |
The wall of the small intestine contains fingerlike projections called ______ that serve to increase surface area for absorption. |
| | A) | extensions |
| | B) | flagella |
| | C) | reticula |
| | D) | villi |
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11 | |
The duodenal wall of the small intestine secretes ______ . |
| | A) | secretin |
| | B) | cholecystokinin (CCK) |
| | C) | secretin and cholecystokinin (CCK) |
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12 | |
The microvilli of the small intestine are for ______ . |
| | A) | digestion of nutrients |
| | B) | absorption of nutrients |
| | C) | movement of chyme |
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13 | |
Cholecystokinin (CCK) stimulates the gallbladder to release ______ . |
| | A) | bile to emulsify fats |
| | B) | stones that store wastes |
| | C) | lymph for defense against infection |
| | D) | digestive juices to aid digestion |
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14 | |
The large intestine consists of the ______ . |
| | A) | colon |
| | B) | cecum |
| | C) | rectum |
| | D) | colon, cecum, rectum, and anus |
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15 | |
The large intestine absorbs ______ . |
| | A) | alcohol and water |
| | B) | water, salts, and some vitamins |
| | C) | bacteria and vitamins |
| | D) | most nutrients important to maintaining homeostasis |
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16 | |
The accessory organs of digestion are _______ . |
| | A) | pancreas and liver |
| | B) | stomach and duodenum |
| | C) | pancreas, liver, and gallbladder |
| | D) | esophagus and duodenum |
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17 | |
Pancreatic juice contains ______ . |
| | A) | hormones |
| | B) | enzymes |
| | C) | bicarbonate |
| | D) | Both B and C |
| | E) | All of these are correct. |
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18 | |
The liver stores glucose as ______ . |
| | A) | fructose |
| | B) | maltose |
| | C) | glycogen |
| | D) | proteins |
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19 | |
Which of the following are enzymes secreted by the small intestine? |
| | A) | peptidase and amylase |
| | B) | maltase and lipase |
| | C) | trypsin and peptidase |
| | D) | peptidase and maltase |
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20 | |
Carbohydrate, protein, and fat are classified as ____. |
| | A) | macronutrients |
| | B) | micronutrients |
| | C) | vitamins |
| | D) | nonessential nutrients |
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21 | |
The most readily available source of energy for the body is ____. |
| | A) | glucose |
| | B) | protein |
| | C) | fat |
| | D) | lipids |
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22 | |
Recent studies show that _____ fats lower LDL cholesterol levels without lowering good HDL cholesterol levels. |
| | A) | polyunsaturated and disaturated |
| | B) | monounsaturated and polyunsatured |
| | C) | saturated |
| | D) | disaturated |
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23 | |
Which of the following vitamins function as antioxidants? |
| | A) | A |
| | B) | C |
| | C) | E |
| | D) | A, C and E |
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24 | |
Minerals that the body contains less than 5 grams of are called _____. |
| | A) | macrominerals |
| | B) | microminerals |
| | C) | megaminerals |
| | D) | vitamins |
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25 | |
Osteoporosis can result from a lack of sufficient amounts of ____. |
| | A) | iron |
| | B) | folic acid |
| | C) | magnesium |
| | D) | calcium |
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26 | |
An eating disorder typical of teenage girls who feel fat even though they are extremely thin is ______ . |
| | A) | obesity |
| | B) | bulimia |
| | C) | anorexia nervosa |
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