The Digestive System

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