Question 1

What is the function of interstitial cells of the myenteric plexus?

Accepted Answer

A)  chemoreceptors that detect the chemical composition of food
B)  production of mucus for lubrication and protection
C)  pacemaker cells that promote rhythmic contractions of the smooth muscle
D)  release of enzymes for chemical digestionE) A) and B)
F) B) and C)

Question 2

Which of the following statements concerning cholecystokinin is correct?

Accepted Answer

A)  Cholecystokinin stimulates relaxation of the gallbladder.
B)  Cholecystokinin stimulates secretion of mucus by the gastric glands.
C)  Cholecystokinin stimulates the pancreas to release an enzyme-rich solution.
D)  Cholecystokinin stimulates the intestine to secrete trypsin.
E)  Cholecystokinin stimulates gastric secretions.F) A) and C)
G) A) and E)

Question 3

Most nutrient absorption occurs in the

Accepted Answer

A)  stomach and esophagus.
B)  duodenum and jejunum.
C)  ascending colon and cecum.
D)  pancreatic duct and gall bladder.
E)  ileum and transverse colon.F) C) and E)
G) B) and D)

Question 4

A mixing contraction in the small intestine is called

Accepted Answer

A)  peristalsis.
B)  segmental contraction.
C)  deglutition.
D)  mass movement.E) C) and D)
F) All of the above

Question 5

The salivary glands located just anterior to the ear are the

Accepted Answer

A)  parotid glands.
B)  submandibular glands.
C)  buccal glands.
D)  labial glands.
E)  sublingual glands.F) A) and B)
G) C) and E)

Question 6

Which of the following regions of the stomach is correctly matched with its description?

Accepted Answer

A)  body - portion closest to the esophagus
B)  pylorus - the most inferior portion of the stomach
C)  fundus - opening from the stomach into the duodenum
D)  cardiac region - the largest portion of the stomach
E)  pyloric opening - opening from the esophagusF) A) and C)
G) C) and D)

Question 7

Match the secretion with the correct cell type.
-trypsin

Accepted Answer

A)  endocrine cells
B)  hepatocyte
C)  parietal cells
D)  acinar cells
E)  goblet cells,F) C) and E)
G) C) and D)

Question 8

Lipid-soluble drugs placed under the tongue

Accepted Answer

A)  are more easily swallowed.
B)  can be detected by taste buds.
C)  are quickly dissolved and absorbed.
D)  are then easy to chew.
E)  are not readily absorbed.F) A) and E)
G) A) and C)

Question 9

Reflux of gastric contents into the esophagus occurs because of

Accepted Answer

A)  relaxation of the cardiac sphincter.
B)  contraction of the pyloric sphincter.
C)  spasms of the submucosal layer of the stomach wall.
D)  increased hydrochloric acid production by the parietal cells.
E)  increased amounts of mucous produced by the stomach.F) A) and E)
G) B) and E)

Question 10

Intrinsic factor

Accepted Answer

A)  increases gastric motility.
B)  causes the release of stomach acid.
C)  facilitates the absorption of vitamin B12.
D)  protects the stomach lining from the effects of stomach acid.
E)  stimulates the synthesis of DNA.F) A) and E)
G) B) and E)

Question 11

Which of the following statements applies to the ileocecal sphincter?

Accepted Answer

A)  Cecal distention enhances relaxation of this sphincter.
B)  Closure of this sphincter inhibits absorption in the small intestine.
C)  Peristaltic contractions reaching this sphincter cause it to relax.
D)  This sphincter is usually relaxed.
E)  This sphincter stays contracted.F) All of the above
G) C) and D)

Question 12

Which of the following would inhibit normal movements of the tongue?

Accepted Answer

A)  swollen lips
B)  lingual frenulum extending to tip of tongue
C)  decrease in number of taste buds
D)  loss of all teeth
E)  swollen tonsilsF) A) and E)
G) B) and E)

Question 13

Where does the majority of nutrient absorption occur?

Accepted Answer

A)  the stomach and duodenum
B)  the duodenum and ileum
C)  the jejunum and duodenum
D)  the ileum and jejunumE) None of the above
F) A) and C)

Question 14

Which of the following cell types is correctly matched with its function?

Accepted Answer

A)  endocrine cells - produce mucus
B)  absorptive cells - produce digestive enzymes
C)  granular cells - absorb nutrients
D)  goblet cells - produce hormones
E)  granular cells - produce granulesF) A) and B)
G) A) and C)

Question 15

Which of the following is correctly matched?

Accepted Answer

A)  mucosa - controls peristalsis
B)  serosa - contains an extensive supply of nerves and blood vessels
C)  submucosa - lamina propria
D)  serosa - increased surface area
E)  muscularis - responsible for peristalsisF) A) and D)
G) A) and C)

Question 16

The gastric phase of gastric secretion

Accepted Answer

A)  decreases the release of gastrin in the stomach.
B)  is triggered by taste,sight,thought,or smell of food.
C)  is mediated by impulses on sympathetic nerves.
D)  leads to the greatest volume of gastric secretion.
E)  leads to the least volume of gastric secretion.F) A) and D)
G) B) and E)

Question 17

Match the secretion with the correct cell type.
-mucus

Accepted Answer

A)  endocrine cells
B)  hepatocyte
C)  parietal cells
D)  acinar cells
E)  goblet cells,F) B) and E)
G) A) and E)

Question 18

Fatty acids and certain lipids in the duodenum initiate the release of

Accepted Answer

A)  secretin and gastrin.
B)  cholecystokinin (CCK) .
C)  gastrin and histamine.
D)  somatostatin and CCK.
E)  insulin and glucagon.F) A) and B)
G) A) and C)

Question 19

The lips,cheek,and tongue all aid in

Accepted Answer

A)  speech and swallowing.
B)  mastication,speech,and swallowing.
C)  mastication and swallowing.
D)  mastication and sense of taste.
E)  deglutition and peristalsis.F) A) and E)
G) All of the above

Question 20

Match the disorder with the best description.
-hemorrhoids

Accepted Answer

A)  inflammation of the liver
B)  watery feces
C)  bad breath
D)  enlargement or inflammation of the vein of the anal canal
E)  chronic acid in the esophagus,F) A) and C)
G) B) and D)

Exam 24: Digestive System

Which of the following would inhibit normal movements of the tongue?

Correct AnswerverifiedShow Answer

Intrinsic factor

Correct AnswerverifiedShow Answer

Most nutrient absorption occurs in the

Correct AnswerverifiedShow Answer

A mixing contraction in the small intestine is called

Correct AnswerverifiedShow Answer

Which of the following statements applies to the ileocecal sphincter?

Correct AnswerverifiedShow Answer

Which of the following regions of the stomach is correctly matched with its description?

Correct AnswerverifiedShow Answer

The gastric phase of gastric secretion

Correct AnswerverifiedShow Answer

Which of the following is correctly matched?

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What is the function of interstitial cells of the myenteric plexus?

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The salivary glands located just anterior to the ear are the

Correct AnswerverifiedShow Answer

Which of the following statements concerning cholecystokinin is correct?

Correct AnswerverifiedShow Answer

Match the secretion with the correct cell type. -mucus

Correct AnswerverifiedShow Answer

Match the secretion with the correct cell type. -trypsin

Correct AnswerverifiedShow Answer

Reflux of gastric contents into the esophagus occurs because of

Correct AnswerverifiedShow Answer

The lips,cheek,and tongue all aid in

Correct AnswerverifiedShow Answer

Match the disorder with the best description. -hemorrhoids

Correct AnswerverifiedShow Answer

Fatty acids and certain lipids in the duodenum initiate the release of

Correct AnswerverifiedShow Answer

Which of the following cell types is correctly matched with its function?

Correct AnswerverifiedShow Answer

Where does the majority of nutrient absorption occur?

Correct AnswerverifiedShow Answer

Lipid-soluble drugs placed under the tongue

Correct AnswerverifiedShow Answer

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