Question 1

Which of the following is not associated with the large absorptive surface of the small intestine?

Accepted Answer

A)   Circular folds (plicae circulares) 
B)   Intestinal length
C)   Microvilli
D)   Villi
E)   RugaeF) C) and E)
G) B) and C)

Question 2

The muscle tone of the __________ along the colon contracts it lengthwise,causing its walls to bulge and form pouches called __________.

Accepted Answer

A)   circular folds;ceca
B)   taeniae coli;haustra
C)   haustra;taeniae coli
D)   internal sphincters;omental (epiploic) appendages
E)   internal sphincters;cecaF) A) and C)
G) A) and B)

Question 3

The swallowing center is located in the __________.

Accepted Answer

A)   mouth
B)   oropharynx
C)   esophagus
D)   medulla oblongata
E)   enteric nervous systemF) B) and C)
G) All of the above

Question 4

Acid reflux into the esophagus ("heartburn") is normally prevented by __________.

Accepted Answer

A)   pharyngeal constrictors
B)   the upper esophageal sphincter
C)   the lower esophageal sphincter (LES) 
D)   esophageal glands
E)   pharyngeal and buccal sphinctersF) None of the above
G) A) and B)

Question 5

Which of the following nutrients is absorbed by the lacteals of the small intestine?

Accepted Answer

A)   Triglycerides
B)   Amino acids
C)   Glucose
D)   Minerals
E)   Water-soluble vitaminsF) A) and D)
G) None of the above

Question 6

The enzyme(s) called __________ break(s) down the substrate called __________.

Accepted Answer

A)   lactase;glucose
B)   peptidases;proteins
C)   lipases;micelles
D)   lactose;lactase
E)   nucleases;nucleotidesF) A) and B)
G) B) and C)

Question 7

Amino acids and monosaccharides are absorbed in the __________,and fatty acids are absorbed in the __________.

Accepted Answer

A)   small intestine;large intestine
B)   small intestine;liver
C)   stomach;small intestine
D)   stomach;large intestine
E)   small intestine;small intestineF) C) and D)
G) A) and B)

Question 8

Without a properly functioning large intestine a person will have chronic diarrhea.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is true regarding the difference between the mucosa of the small and large intestines?

Accepted Answer

A)   They both have villi,but only the small intestine has microvilli.
B)   The small intestine has deeper intestinal crypts than the large intestine.
C)   The small intestine has simple columnar epithelium and the large intestine does not.
D)   Intestinal crypts are only found in the large intestine.
E)   The large intestine has larger circular folds than the small intestine.F) B) and C)
G) All of the above

Question 10

The enterogastric reflex serves to __________.

Accepted Answer

A)   relax the stomach in preparation for swallowed food
B)   stimulate acid and enzyme secretion when food enters the stomach
C)   stimulate intestinal motility when there is food in the stomach
D)   inhibit gastric motility when there is chyme in the small intestine
E)   relax the ileocecal valve when chyme is on its way to the colonF) A) and E)
G) C) and D)

Question 11

The small intestine uses segmentation to mix chyme with digestive enzymes,increase its contact with the mucosa,and propel it forward through the digestive tract.

Accepted Answer

A) True 
 B)False

Question 12

The surface of the tongue is covered with __________ stratified squamous epithelium,and has bumps called __________,where many taste buds can be found.

Accepted Answer

A)   keratinized;lingual papillae
B)   keratinized;lingual frenulum
C)   nonkeratinized;lingual papillae
D)   nonkeratinized;tonsils
E)   nonkeratinized;vallate papillaeF) A) and D)
G) A) and B)

Question 13

A sodium bicarbonate solution is secreted in response to a hormone called __________.

Accepted Answer

A)   insulin
B)   cholecystokinin (CCK) 
C)   secretin
D)   glucagon
E)   gastrinF) C) and D)
G) B) and E)

Question 14

Which of the following statements is true regarding the sodium-glucose transport protein (SGLT) ?

Accepted Answer

A)   It is a uniport carrier.
B)   It is an antiport carrier.
C)   It uses solvent drag to transport glucose and sodium.
D)   It transports glucose and sodium from the intestinal lumen into the epithelial cells.
E)   It transports glucose from the intestinal lumen into the epithelial cells,and sodium in the opposite direction.F) C) and E)
G) C) and D)

Question 15

The oral phase of swallowing is under __________ control and the pharyngo-esophageal phase is __________.

Accepted Answer

A)   central nervous system;also controlled by the central nervous system
B)   central nervous system;controlled by autonomic reflexes
C)   autonomic nervous system;controlled by autonomic reflexes
D)   voluntary;also voluntary
E)   involuntary;also involuntaryF) None of the above
G) A) and B)

Question 16

Pepsinogen is produced by __________ and is activated by __________,which is secreted by __________.

Accepted Answer

A)   chief cells;carbonic anhydrase (CAH) ;parietal cells
B)   chief cells;hydrochloric acid (HCl) ;parietal cells
C)   parietal cells;hydrochloric acid (HCl) ;chief cells
D)   parietal cells;carbonic anhydrase (CAH) ;chief cells
E)   enteroendocrine cells;carbonic anhydrase (CAH) ;parietal cellsF) D) and E)
G) None of the above

Question 17

Which of the following is the accessory organ of digestion responsible for producing bile?

Accepted Answer

A)   Tongue
B)   Liver
C)   Pancreas
D)   Salivary glands
E)   GallbladderF) C) and D)
G) B) and E)

Question 18

The movement of colonic contents from one puckered section to another is called __________.

Accepted Answer

A)   the gastrocolic reflex
B)   the duodenocolic reflex
C)   mass movement
D)   haustral contraction
E)   defecationF) B) and D)
G) D) and E)

Question 19

Pancreatic enzymes are secreted in response to a hormone called __________.

Accepted Answer

A)   insulin
B)   cholecystokinin (CCK) 
C)   secretin
D)   glucagon
E)   gastrinF) All of the above
G) A) and B)

Question 20

Carbohydrate digestion begins in the __________,whereas protein digestion begins in the __________.

Accepted Answer

A)   liver;small intestine
B)   small intestine;stomach
C)   mouth;stomach
D)   mouth;small intestine
E)   stomach;small intestineF) None of the above
G) B) and D)

Exam 25: The Digestive System

A sodium bicarbonate solution is secreted in response to a hormone called __________.

Correct AnswerverifiedShow Answer

The movement of colonic contents from one puckered section to another is called __________.

Correct AnswerverifiedShow Answer

Which of the following nutrients is absorbed by the lacteals of the small intestine?

Correct AnswerverifiedShow Answer

Without a properly functioning large intestine a person will have chronic diarrhea.

Correct AnswerverifiedShow Answer

The surface of the tongue is covered with __________ stratified squamous epithelium,and has bumps called __________,where many taste buds can be found.

Correct AnswerverifiedShow Answer

Pancreatic enzymes are secreted in response to a hormone called __________.

Correct AnswerverifiedShow Answer

The oral phase of swallowing is under __________ control and the pharyngo-esophageal phase is __________.

Correct AnswerverifiedShow Answer

The small intestine uses segmentation to mix chyme with digestive enzymes,increase its contact with the mucosa,and propel it forward through the digestive tract.

Correct AnswerverifiedShow Answer

Pepsinogen is produced by __________ and is activated by __________,which is secreted by __________.

Correct AnswerverifiedShow Answer

The swallowing center is located in the __________.

Correct AnswerverifiedShow Answer

Acid reflux into the esophagus ("heartburn") is normally prevented by __________.

Correct AnswerverifiedShow Answer

The enterogastric reflex serves to __________.

Correct AnswerverifiedShow Answer

Which of the following is true regarding the difference between the mucosa of the small and large intestines?

Correct AnswerverifiedShow Answer

Which of the following is the accessory organ of digestion responsible for producing bile?

Correct AnswerverifiedShow Answer

Amino acids and monosaccharides are absorbed in the __________,and fatty acids are absorbed in the __________.

Correct AnswerverifiedShow Answer

The enzyme(s) called __________ break(s) down the substrate called __________.

Correct AnswerverifiedShow Answer

Which of the following is not associated with the large absorptive surface of the small intestine?

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding the sodium-glucose transport protein (SGLT) ?

Correct AnswerverifiedShow Answer

The muscle tone of the __________ along the colon contracts it lengthwise,causing its walls to bulge and form pouches called __________.

Correct AnswerverifiedShow Answer

Carbohydrate digestion begins in the __________,whereas protein digestion begins in the __________.

Correct AnswerverifiedShow Answer

Correct Answer
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The surface of the tongue is covered with stratified squamous epithelium,and has bumps called ,where many taste buds can be found.

Correct Answer
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The oral phase of swallowing is under control and the pharyngo-esophageal phase is .

Correct Answer
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Correct Answer
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Pepsinogen is produced by and is activated by ,which is secreted by __.

Correct Answer
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Amino acids and monosaccharides are absorbed in the ,and fatty acids are absorbed in the .

Correct Answer
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The enzyme(s) called break(s) down the substrate called .

Correct Answer
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Correct Answer
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The muscle tone of the along the colon contracts it lengthwise,causing its walls to bulge and form pouches called .

Correct Answer
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Carbohydrate digestion begins in the ,whereas protein digestion begins in the .

Correct Answer
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