Please answer all questions. The numbers at the end of each question refer to the textbook page where the question topic is discussed.
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1 | |
Ingested food must be digested before it can be absorbed. (635) |
| | A) | True |
| | B) | False |
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2 | |
Absorbed molecules of food enter either the circulatory or the lymphatic system. (635) |
| | A) | True |
| | B) | False |
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3 | |
The GI tract is approximately 9 m (30 ft) long, beginning at the esophagus and ending at the anal canal. (635) |
| | A) | True |
| | B) | False |
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4 | |
The term gut is a synonym for viscera. (635) |
| | A) | True |
| | B) | False |
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5 | |
The lamina propria is a tunic, or layer, of the GI tract located between the submucosa and the muscularis. (637) |
| | A) | True |
| | B) | False |
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6 | |
Stimulation of the parasympathetic fibers to the GI tract decreases peristalsis and intestinal secretions. (640) |
| | A) | True |
| | B) | False |
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7 | |
The tongue is a mass of smooth muscles covered by a mucous epithelial membrane. (642) |
| | A) | True |
| | B) | False |
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8 | |
Vallate papillae are the most numerous of the three types of papillae. (642) |
| | A) | True |
| | B) | False |
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9 | |
As one swallows, the palatal rugae and the uvula are drawn upward, closing the nasopharynx. (648) |
| | A) | True |
| | B) | False |
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10 | |
The formula for permanent dentition in humans is I2/2, Cl/1, P2/2, M3/3 = 16 X 2 = 32 teeth. (642) |
| | A) | True |
| | B) | False |
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11 | |
The submandibular glands contain only serous secretory cells. (645) |
| | A) | True |
| | B) | False |
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12 | |
The esophagus is a collapsible muscular tube that connects the pharynx to the stomach. (648) |
| | A) | True |
| | B) | False |
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13 | |
The sensation of "heartburn" results when gastric juice is regurgitated into the esophagus. (648) |
| | A) | True |
| | B) | False |
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14 | |
Mastication and deglutition are totally voluntary processes, whereas peristalsis is an involuntary process. (648) |
| | A) | True |
| | B) | False |
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15 | |
Elevation of the uvula prevents food or fluid from entering the glottis. (648) |
| | A) | True |
| | B) | False |
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16 | |
There are three layers of the muscularis in the stomach wall and only two layers of the muscularis in the intestinal wall. (650) |
| | A) | True |
| | B) | False |
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17 | |
The total arterial blood supply to the small intestine comes through the superior mesenteric artery. (652) |
| | A) | True |
| | B) | False |
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18 | |
The duodenum receives bile through an opening from the common bile duct and pancreatic juice through an opening from the pancreatic duct. (653) |
| | A) | True |
| | B) | False |
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19 | |
The jejunum is the longest portion of the small intestine. (653) |
| | A) | True |
| | B) | False |
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20 | |
Absorbed fat from the lumen of the small intestine enters the central lacteals to be transported through the thoracic duct of the lymphatic system. (655) |
| | A) | True |
| | B) | False |
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21 | |
The villi compose the brush border within the small intestine. (654) |
| | A) | True |
| | B) | False |
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22 | |
Peristalsis is the only action that moves chyme through the small intestine. (655) |
| | A) | True |
| | B) | False |
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23 | |
The appendix is a fingerlike projection extending from the cecum. (656) |
| | A) | True |
| | B) | False |
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24 | |
The internal anal sphincter, composed of skeletal muscle fibers, guards the opening of the anal canal. (657) |
| | A) | True |
| | B) | False |
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25 | |
The taeniae coli are circular bands of smooth muscle that separate the haustra of the large intestine. (657) |
| | A) | True |
| | B) | False |
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26 | |
The regularly occurring mass movement of the large intestine corresponds with the entrance of chyme through the ileocecal valve. (659) |
| | A) | True |
| | B) | False |
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27 | |
A defecation sensation that may occur after eating a meal is an expression of the gastrocolic reflex. (659) |
| | A) | True |
| | B) | False |
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28 | |
Relaxation of the internal anal sphincter in the defecation reflex permits movement of feces into the anal canal. (659) |
| | A) | True |
| | B) | False |
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29 | |
Bile produced by the hepatocytes flows sequentially through the bile canaliculi, hepatic ducts, and finally the bile ducts. (662) |
| | A) | TRUE |
| | B) | FALSE |
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30 | |
The principal function of the gallbladder is to detoxify bile before it is released into the duodenum. (662) |
| | A) | True |
| | B) | False |
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31 | |
Bile can pass only one way through the cystic duct. (662) |
| | A) | True |
| | B) | False |
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32 | |
The liver and pancreas are considered mixed glands because they have both endocrine and exocrine functions. (663) |
| | A) | True |
| | B) | False |
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33 | |
All but a portion of the head of the pancreas is positioned retroperitoneally. (668) |
| | A) | True |
| | B) | False |
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34 | |
The entire GI tract, from the mouth to the anus, is derived from endoderm. (665) |
| | A) | True |
| | B) | False |
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35 | |
By the sixth week of development the liver is producing red blood cells; at the ninth week the liver represents 10% of the total weight of the fetus. (666) |
| | A) | True |
| | B) | False |
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2002 McGraw-Hill Higher Education