The Digestive System

46 Questions  I  By Dru31988
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1.   Defecation is stimulated by 
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B.
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D.
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2.  Lecithin prepares fats for hydrolysis by forming 
A.
B.
C.
D.
E.
3.  Infants have ________________ deciduous teeth, whereas adults have ________________ permanent teeth. 
A.
B.
C.
D.
E.
4.  Amino acids and monosaccharides are absorbed in the ____________, and fatty acids are absorbed in the _______________. 
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B.
C.
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5.  Chemical digestion breaks down _____________ into __________________.
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B.
C.
D.
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6.  Proteins are digested by different enzymes acting in the following sequence 
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B.
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7.  ____________, which is secreted by ___________ cells, is necessary for Vitamin B12 absorption. 
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8.  _____________ is associated with food stretching the stomach and activating myenteric and vagovagal reflexes, which in turn stimulate gastric secretions. 
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9.  The ___________ regulates digestive tract motility, secretion, and blood flow and its neurons are found in the ____________. 
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10.  The muscle tone of the ________________ along the colon contracts it lengthwise, causing its walls to bulge and form pouches called _______________. 
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11.   The serous membranes that suspend the stomach and intestines from the abdominal wall are called 
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12.  Carbohydrate digestion begins in the ______________, whereas protein digestion begins in the ______________. 
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13.  The small intestine has a very large absorptive surface associated with all these structures except 
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14.  ____________ transport lipids to the surface of the intestinal absorptive cells, which process them into _________________. 
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15.  Of the following components of bile, only _____________ has/have a digestive function. 
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16.  Hydrochloric acid (HCl) is secreted by ____________ cells. 
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17.  These nutrients are all absorbed without being digested except 
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18.  The ______________ gland is an extrinsic salivary gland; whereas the ______________ gland is an intrinsic salivary gland. 
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19.  The enterogastric reflex serves to 
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20.   The small intestine is suspended from the abdominal wall by 
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21.  The ______________ of the small intestine is/are similar to the _________________ of the stomach. 
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22.  The _______________ synthesizes bile acids by metabolizing ____________________. 
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23.  Bacterial flora carry out all of the following except 
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24.  The surface of the tongue is covered with ____________ stratified squamous epithelium, and has bumps called __________________, site of taste buds. 
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25.  These are normally found in saliva except 
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26.  A hepatic triad consists of 
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27.  Which of the following enzymes functions at the lowest pH?  
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28.  The migrating motor complex 
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29.  Each of the following lists some of the tissue layers of the digestive tract. Which one has them in correct order from lumen to external surface? 
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30.  . ______________ is a hormone, whereas ________________ is an enzyme. 
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31.  Acid reflux into the esophagus ("heartburn") is normally prevented by 
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32.  Pancreatic enzymes are secreted in response to the hormone 
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33.  . The buccal phase of swallowing is under _____________ control and the pharyngo-esophageal phase is ______________. 
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34.  Which of these nutrients is absorbed by the lacteals of the small intestine? 
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D.
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35.  The sodium-glucose trasnsport protein (SGLP)
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36.  From superficial to deep, these are the structures found in a typical tooth. 
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D.
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37.  The three most abundant classes of nutrients are 
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38.  Which of these is the site of contact digestion? 
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39.  The organ that stores excess glucose and releases it later into the blood is 
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40.  ____________ is the physiological process that moves a nutrient from the outside to the inside of the body. 
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41.  Pepsinogen is produced by ____________ and is activated by ___________. 
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42.  Bacteria constitute about __________% of the dry weight of the feces
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43.  These are all accessory organ of the digestive system except 
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44.  The swallowing center is located in
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45.  Which of these is not a component of the pancreatic juice? 
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46.  Why are several digestive enzymes secreted as zymogens? 
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