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1 | |
Which of the following digestive system organs is an accessory organ? |
| | A) | mouth |
| | B) | stomach |
| | C) | pancreas |
| | D) | small intestine |
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2 | |
The function of the projections of the mucosa of the GI tract is to |
| | A) | increase its secretory capacity |
| | B) | protect the surface of the inner wall |
| | C) | enlarge the area available for absorption |
| | D) | decrease the effects of peristalsis |
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3 | |
The vessels that nourish the tissues of the alimentary canal and carry away absorbed materials are found in the |
| | A) | mucosa |
| | B) | submucosa |
| | C) | muscular layer |
| | D) | serosa |
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4 | |
The layer of the wall of the alimentary canal which keeps the outer surface of the alimentary canal moist and slippery is the |
| | A) | mucosa |
| | B) | submucosa |
| | C) | muscular layer |
| | D) | serosa |
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5 | |
The major change to food that occurs in the mouth is |
| | A) | mechanically reducing the size of solid particles |
| | B) | beginning the separation of fats from proteins |
| | C) | beginning the chemical changes needed to produce nutrients in a form that can be absorbed |
| | D) | allowing the taste of the food to be savored |
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6 | |
The functions of the tongue include |
| | A) | mixing food particles with saliva |
| | B) | moving food toward the palate |
| | C) | both |
| | D) | neither |
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7 | |
During swallowing, muscles draw the soft palate and uvula upward to |
| | A) | move food into the esophagus |
| | B) | enlarge the area to accommodate a bolus of food |
| | C) | separate the oral and nasal cavities |
| | D) | move the uvula from the path of the food bolus |
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8 | |
The teeth that grasp and tear food are the |
| | A) | incisors |
| | B) | cuspids |
| | C) | bicuspids |
| | D) | molars |
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9 | |
Good dental hygiene is essential because |
| | A) | repair of damage to teeth is expensive |
| | B) | once damaged, enamel cannot be replaced |
| | C) | both |
| | D) | neither |
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10 | |
Which of the following is not a function of saliva? |
| | A) | cleanse the mouth and teeth |
| | B) | dissolve chemicals necessary to tasting food |
| | C) | help in formation of food bolus |
| | D) | begin digestion of protein |
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11 | |
When a bolus of food reaches the end of the esophagus, the lower esophageal sphincter relaxes in response to |
| | A) | the weight of the bolus of food |
| | B) | nerve impulses conducted by the sympathetic division |
| | C) | nerve impulses conducted by the parasympathetic division |
| | D) | arrival of peristaltic waves |
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12 | |
The area of the stomach that acts as a temporary storage area for ingested food is the |
| | A) | cardiac region |
| | B) | fundic region |
| | C) | body region |
| | D) | pyloric region |
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13 | |
The chief cells of the gastric glands secrete |
| | A) | mucus |
| | B) | hydrochloric acid |
| | C) | digestive enzymes |
| | D) | potassium chloride |
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14 | |
The digestive enzyme pepsin, secreted by gastric glands, begins the digestion of |
| | A) | carbohydrates |
| | B) | protein |
| | C) | both |
| | D) | neither |
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15 | |
The release of gastrin is stimulated mainly by the |
| | A) | parasympathetic nervous system |
| | B) | presence of alkaline substances |
| | C) | sight and smell of food |
| | D) | presence of substances such as carbohydrates and caffeine in the stomach |
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16 | |
The foods that stay longest in the stomach are |
| | A) | protein foods |
| | B) | fatty foods |
| | C) | complex carbohydrate foods |
| | D) | simple sugar foods |
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17 | |
Pancreatic enzymes travel along the pancreatic duct and, along with the bile duct, join the alimentary canal at the |
| | A) | duodenum |
| | B) | jejunum |
| | C) | ileum |
| | D) | pylorus |
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18 | |
Which of the following enzymes is present in the mouth, stomach, and pancreas? |
| | A) | amylase |
| | B) | lipase |
| | C) | trypsin |
| | D) | lactase |
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19 | |
Which of the following liver functions does not concern protein metabolism? |
| | A) | deaminating amino acids |
| | B) | forming urea |
| | C) | forming bile |
| | D) | synthesizing clotting factors |
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20 | |
Which of the following substances is (are) not stored in the liver? |
| | A) | vitamins A and D |
| | B) | carbohydrate |
| | C) | iron |
| | D) | water soluble vitamins |
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21 | |
Type A hepatitis is transmitted by |
| | A) | ingestion of food contaminated by feces |
| | B) | transfusion with blood contaminated by the hepatitis virus |
| | C) | use of improperly cleaned needles |
| | D) | sexual activity |
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22 | |
The function of the gallbladder is to |
| | A) | store bile |
| | B) | secrete bile |
| | C) | activate bile |
| | D) | modify the pH of bile |
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23 | |
Which of the following is a function of bile? |
| | A) | emulsification of fats |
| | B) | absorption of fats |
| | C) | increase the solubility of amino acids |
| | D) | absorption of water soluble vitamins |
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24 | |
The velvety appearance of the lining of the small intestine is due to the presence of |
| | A) | cilia |
| | B) | villi |
| | C) | mucus secreted by the small intestine |
| | D) | capillaries |
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25 | |
Glands within the small intestine produce enzymes that break down |
| | A) | peptides |
| | B) | disaccharides |
| | C) | both |
| | D) | neither |
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26 | |
Which of the following nutrients are absorbed by the lacteals of the villi of the small intestine? |
| | A) | peptides |
| | B) | fats |
| | C) | amino acids |
| | D) | glucose |
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27 | |
All of the following nutrients enter blood capillaries via intestinal villi except |
| | A) | amino acids |
| | B) | monosaccharides |
| | C) | all fatty acids |
| | D) | electrolytes |
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28 | |
The internal and external anal sphincters guard the |
| | A) | Sigmoid colon |
| | B) | rectum |
| | C) | anal canal |
| | D) | anus |
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29 | |
Which of the following nutrients is not absorbed by the intestine? |
| | A) | fructose |
| | B) | galactose |
| | C) | glucose |
| | D) | cellulose |
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30 | |
The carbohydrate form most commonly oxidized by cells as fuel is |
| | A) | fructose |
| | B) | lactose |
| | C) | glucose |
| | D) | galactose |
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31 | |
Which of the following is a water soluble vitamin? |
| | A) | A |
| | B) | C |
| | C) | D |
| | D) | E |
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32 | |
Digestion is the mechanical and chemical breakdown of foods into nutrients that cell membranes can absorb. |
| | A) | True |
| | B) | False |
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33 | |
While various regions of the alimentary canal are specialized to carry out certain functions, the structure of its wall and its innervation is similar throughout its length. |
| | A) | True |
| | B) | False |
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34 | |
The lips contain both smooth and skeletal muscle as well as receptors for temperature and pain. |
| | A) | True |
| | B) | False |
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35 | |
Skeletal muscle makes up most of the bulk of the tongue. |
| | A) | True |
| | B) | False |
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36 | |
The hard and soft palate form the roof of the oral cavity. |
| | A) | True |
| | B) | False |
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37 | |
There are 32 teeth in both the primary and secondary sets of teeth. |
| | A) | True |
| | B) | False |
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38 | |
The only secretion of the salivary glands is the digestive enzyme amylase. |
| | A) | True |
| | B) | False |
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39 | |
The three phases of swallowing are controlled by the somatic nervous system. |
| | A) | True |
| | B) | False |
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40 | |
Mucous cells of the gastric glands secrete a thick alkaline substance that coats the lining of the stomach and prevents its digestion by pepsin and hydrochloric acid. |
| | A) | True |
| | B) | False |
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2003 McGraw-Hill Higher Education