Question 1

An enzyme that digests proteins into peptides is

Accepted Answer

A)   lipase.
B)   amylase.
C)   nuclease.
D)   maltase.
E)   trypsin.F) D) and E)
G) All of the above

Question 2

A proenzyme secreted by the pancreas is

Accepted Answer

A)   trypsinogen.
B)   amylase.
C)   carboxypeptidase.
D)   lipase.
E)   bileF) C) and D)
G) A) and B)

Question 3

Absorption of glucose from the gut lumen depends on all of the following except

Accepted Answer

A)   the sodium-potassium pump in the basolateral membrane of the epithelial cell.
B)   cotransporter proteins in the apical membrane of the epithelial cell.
C)   higher sodium ion concentration in the lumen than in the epithelial cell.
D)   sodium-linked cotransport.
E)   emulsification forming small micelles.F) A) and B)
G) None of the above

Question 4

Each of the following is a function of the liver except

Accepted Answer

A)   synthesis and secretion of bile.
B)   antibody production.
C)   synthesis of plasma proteins.
D)   inactivation of toxins.
E)   storage of glycogen and iron reserves.F) B) and E)
G) A) and E)

Question 5

The ________ are double sheets of peritoneal membrane that suspend the visceral organs and carry nerves,lymphatics, and blood vessels.

Accepted Answer

A)   serosa
B)   adventitia
C)   mesenteries
D)   fibrosa
E)   lamina propriaF) A) and D)
G) D) and E)

Question 6

Parietal cells secrete

Accepted Answer

A)   pepsinogen.
B)   gastrin.
C)   mucus.
D)   hydrochloric acid.
E)   enteropeptidase.F) A) and E)
G) A) and D)

Question 7

Gastric pits are

Accepted Answer

A)   ridges in the body of the stomach.
B)   involved in absorption of liquids from the stomach.
C)   openings into gastric glands.
D)   acid scars in the esophagus.
E)   hollows where proteins are stored.F) D) and E)
G) A) and D)

Question 8

A surgical procedure to promote rapid weight loss is removal of most of the

Accepted Answer

A)   pancreas.
B)   liver.
C)   duodenum.
D)   jejunum.
E)   ileum.F) B) and E)
G) B) and D)

Question 9

________ pair(s)  of salivary glands secrete into the oral cavity.

Accepted Answer

A)   One
B)   Two
C)   Three
D)   Four
E)   Six to TenF) A) and B)
G) None of the above

Question 10

The enzyme pepsin digests

Accepted Answer

A)   carbohydrates.
B)   proteins.
C)   lipids.
D)   nucleic acids.
E)   vitamins.F) A) and B)
G) A) and C)

Question 11

Figure 24-1 The Stomach (dissected) 
 
Use Figure 24-1 to answer the following questions:
-UseWhat is the function of the structure labeled "6"?

Accepted Answer

A)   strains materials entering the stomach
B)   regulates gastric emptying
C)   mixes stomach juice into food
D)   controls contraction of stomach muscles
E)   prevents food from entering the esophagusF) C) and D)
G) B) and C)

Question 12

A stratified squamous epithelial lining can be found in all of the following except in the

Accepted Answer

A)   anal canal.
B)   esophagus.
C)   stomach.
D)   oropharynx.
E)   oral cavity.F) None of the above
G) B) and D)

Question 13

Products of fat digestion are transported initially by

Accepted Answer

A)   capillaries.
B)   veins.
C)   lymphatic vessels.
D)   the interstitial fluid.
E)   the arterioles.F) A) and C)
G) All of the above

Question 14

Figure 24-2 The Wall of the Small Intestine
 
Use Figure 24-2 to answer the following questions:
-What is the layer labeled "3"?

Accepted Answer

A)   mucosa
B)   submucosa
C)   muscularis externa
D)   muscularis mucosae
E)   serosaF) A) and E)
G) B) and D)

Question 15

Distension of the gastric wall leads to secretion of histamines from the lamina propria. This is an exampleof ________ response.

Accepted Answer

A)   neural
B)   local
C)   muscular
D)   hormonal
E)   antagonisticF) C) and D)
G) B) and D)

Question 16

The fusion of the common hepatic duct and the cystic duct forms the

Accepted Answer

A)   hepatic portal vein.
B)   porta hepatis.
C)   bile duct.
D)   common pancreatic duct.
E)   bile canaliculus.F) All of the above
G) B) and E)

Question 17

The bulk of each tooth consists of a mineralized matrix similar to that of bone called

Accepted Answer

A)   enamel.
B)   cement.
C)   dentin.
D)   pulp.
E)   periodontium.F) A) and B)
G) A) and C)

Question 18

All of the following are true of the lining of the stomach except that it

Accepted Answer

A)   has a simple columnar epithelium.
B)   is covered by a thick, viscous mucus.
C)   is constantly being replaced.
D)   contains gastric pits.
E)   recycles bile.F) A) and C)
G) C) and D)

Question 19

In-Text Figure Based Questions
-What stimulates stretch receptors in the rectum? (Figure 24-26)

Accepted Answer

A)   release of mucus into the rectum
B)   gastrin release by the stomach
C)   a high water content in the feces
D)   feces causing distension in the rectum
E)   high concentrations of urobilins and stercobilins in the fecesF) None of the above
G) B) and C)

Question 20

In-Text Figure Based Questions
-Why do circular muscles contract behind the bolus while longitudinal muscles contract ahead of the bolus?(Figure 24-4)

Accepted Answer

A)   Circular muscles contract behind the bolus to close the sphincters while longitudinal muscles contract ahead of the bolus to open the sphincters.
B)   Circular muscles contract behind the bolus to open the sphincters while longitudinal muscles contract ahead of the bolus to close the sphincters.
C)   Circular muscles contract behind the bolus to push the bolus forward while longitudinal muscles contract ahead of the bolus to shorten that segment of the digestive tract.
D)   Circular muscles contract behind the bolus to shorten that segment of the digestive tract while longitudinal muscles contract ahead of the bolus to push the bolus forward.
E)   Circular muscles contract behind the bolus to mix the contents while longitudinal muscles contract ahead of the bolus to activate stretch receptors in the wall of the digestive tract.F) A) and B)
G) None of the above

Exam 24: The Digestive System

In-Text Figure Based Questions -Why do circular muscles contract behind the bolus while longitudinal muscles contract ahead of the bolus?(Figure 24-4)

Correct AnswerverifiedShow Answer

The bulk of each tooth consists of a mineralized matrix similar to that of bone called

Correct AnswerverifiedShow Answer

Parietal cells secrete

Correct AnswerverifiedShow Answer

Gastric pits are

Correct AnswerverifiedShow Answer

All of the following are true of the lining of the stomach except that it

Correct AnswerverifiedShow Answer

In-Text Figure Based Questions -What stimulates stretch receptors in the rectum? (Figure 24-26)

Correct AnswerverifiedShow Answer

An enzyme that digests proteins into peptides is

Correct AnswerverifiedShow Answer

A surgical procedure to promote rapid weight loss is removal of most of the

Correct AnswerverifiedShow Answer

A proenzyme secreted by the pancreas is

Correct AnswerverifiedShow Answer

The fusion of the common hepatic duct and the cystic duct forms the

Correct AnswerverifiedShow Answer

Figure 24-1 The Stomach (dissected) Use Figure 24-1 to answer the following questions: -UseWhat is the function of the structure labeled "6"?

Correct AnswerverifiedShow Answer

The enzyme pepsin digests

Correct AnswerverifiedShow Answer

Products of fat digestion are transported initially by

Correct AnswerverifiedShow Answer

Absorption of glucose from the gut lumen depends on all of the following except

Correct AnswerverifiedShow Answer

Each of the following is a function of the liver except

Correct AnswerverifiedShow Answer

Distension of the gastric wall leads to secretion of histamines from the lamina propria. This is an exampleof ________ response.

Correct AnswerverifiedShow Answer

Figure 24-2 The Wall of the Small Intestine Use Figure 24-2 to answer the following questions: -What is the layer labeled "3"?

Correct AnswerverifiedShow Answer

________ pair(s) of salivary glands secrete into the oral cavity.

Correct AnswerverifiedShow Answer

The ________ are double sheets of peritoneal membrane that suspend the visceral organs and carry nerves,lymphatics, and blood vessels.

Correct AnswerverifiedShow Answer

A stratified squamous epithelial lining can be found in all of the following except in the

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified