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The Digestive System

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