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The Digestive System

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