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The Digestive System

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