Question 1

Which of the following is not a digestive enzyme?

Accepted Answer

A)   amylase
B)   lipase
C)   bile
D)   pepsin
E)   trypsin

Question 2

Triglycerides, steroids, phospholipids and fat-soluble vitamins that are coated with proteins are called

Accepted Answer

A)   lacteals.
B)   chylomicrons.
C)   vesicles.
D)   micelles.
E)   bile salts.

Question 3

Chief cells secrete

Accepted Answer

A)   pepsinogen.
B)   gastrin.
C)   mucus.
D)   hydrochloric acid.
E)   intrinsic factor.

Question 4

The root of a tooth is covered by

Accepted Answer

A)   enamel.
B)   cement.
C)   dentin.
D)   pulp.
E)   the root canal.

Question 5

Which of the following is true regarding the production of intestinal juice?

Accepted Answer

A)   Most of the fluid is actively transported into the lumen.
B)   The pancreas is the source for most of the intestinal juice.
C)   Intestinal juice is produced following activation by motilin.
D)   Local reflexes and parasympathetic stimulation increase the production of intestinal juice.
E)   The cephalic phase of gastric secretion produces intestinal juice.

Question 6

Stimulation of gastric stretch receptors causes all of the following except

Accepted Answer

A)   a decrease in myenteric plexus stimulation.
B)   an increase in histamine release.
C)   an increase in gastrin secretion.
D)   an increase in submucosal neural plexus stimulation.
E)   an increase in acid production.

Question 7

Figure 24-2 The Wall of the Small Intestine
 
Use Figure 24-2 to answer the following questions:
-What type of epithelium covers the structure labeled "6"?

Accepted Answer

A)   simple squamous
B)   stratified squamous
C)   simple cuboidal
D)   simple columnar
E)   pseudostratified ciliated columnar

Question 8

An intestinal hormone that stimulates mucin production by the submucosal duodenal glands is

Accepted Answer

A)   secretin.
B)   cholecystokinin.
C)   enterocrinin.
D)   GIP.
E)   gastrin.

Question 9

D cells release ________, which inhibits the release of gastrin.

Accepted Answer

A)   inhibin
B)   ghrelin
C)   leptin
D)   somatostatin
E)   pepsin

Question 10

The part of a tooth that contains blood vessels and nerves is the

Accepted Answer

A)   enamel.
B)   cement.
C)   dentin.
D)   pulp cavity.
E)   periodontium.

Question 11

Which of the following is not found in the large intestines?

Accepted Answer

A)   villi
B)   intestinal crypts
C)   intestinal glands
D)   mucous cells
E)   simple columnar epithelium

Question 12

A drug that blocks the action of the hormone cholecystokinin would affect all of the following except

Accepted Answer

A)   relaxation of the hepatopancreatic sphincter.
B)   the composition of pancreatic secretions.
C)   the delivery of bile.
D)   digestion of lipids and proteins.
E)   absorption of water in the large intestines.

Question 13

Powerful peristaltic contractions that occur a few times each day in the colon are called

Accepted Answer

A)   segmentation.
B)   pendular movements.
C)   haustral churning.
D)   defecation.
E)   mass movements.

Question 14

Hydrochloric acid from the stomach is neutralized in the small intestine by

Accepted Answer

A)   water that was ingested with the food.
B)   bicarbonate from the pancreas.
C)   trypsin.
D)   bile from the liver.
E)   enzymes from the intestinal crypts.

Question 15

Functions of the tongue include all of the following except

Accepted Answer

A)   mechanical processing of food.
B)   manipulation of food.
C)   sensory analysis of food.
D)   aiding in speech.
E)   partitioning the oropharynx from the nasopharynx.

Question 16

Circular folds and intestinal villi

Accepted Answer

A)   increase the surface area of the mucosa of the small intestine.
B)   carry products of digestion that will not pass through the walls of blood capillaries.
C)   produce new cells for the mucosa of the small intestine.
D)   secrete digestive enzymes.
E)   produce hormones.

Question 17

A feature of the digestive tract wall that increases surface area available for absorption is the

Accepted Answer

A)   transitional cells.
B)   circular folds.
C)   elastic cells.
D)   rugae.
E)   muscularis mucosa.

Question 18

In response to the hormone cholecystokinin, the pancreas secretes a fluid

Accepted Answer

A)   rich in enzymes.
B)   rich in bicarbonate.
C)   rich in bile.
D)   rich in mucus.
E)   that contains only amylase.

Question 19

During deglutition, which of the following phases is first?

Accepted Answer

A)   buccal
B)   pharyngeal
C)   gastric
D)   esophageal
E)   enteric

Question 20

Which is not a reason the stomach is acidic?

Accepted Answer

A)   Kills microorganisms.
B)   Emulsification of lipids.
C)   Denatures proteins.
D)   Helps break down plant cell walls and connective tissue in meat.
E)   Activates pepsin.

Exam 24: The Digestive System

A feature of the digestive tract wall that increases surface area available for absorption is the

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Which of the following is true regarding the production of intestinal juice?

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A drug that blocks the action of the hormone cholecystokinin would affect all of the following except

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Functions of the tongue include all of the following except

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Stimulation of gastric stretch receptors causes all of the following except

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Which of the following is not found in the large intestines?

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The part of a tooth that contains blood vessels and nerves is the

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In response to the hormone cholecystokinin, the pancreas secretes a fluid

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Chief cells secrete

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During deglutition, which of the following phases is first?

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An intestinal hormone that stimulates mucin production by the submucosal duodenal glands is

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Which is not a reason the stomach is acidic?

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The root of a tooth is covered by

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Triglycerides, steroids, phospholipids and fat-soluble vitamins that are coated with proteins are called

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Circular folds and intestinal villi

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Hydrochloric acid from the stomach is neutralized in the small intestine by

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Figure 24-2 The Wall of the Small Intestine Use Figure 24-2 to answer the following questions: -What type of epithelium covers the structure labeled "6"?

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Which of the following is not a digestive enzyme?

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D cells release ________, which inhibits the release of gastrin.

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Powerful peristaltic contractions that occur a few times each day in the colon are called

Correct AnswerverifiedShow Answer

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