Question 1

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) A) and B)
G) C) and D)

Question 2

Necessary for Vitamin B12 absorption,__________ is/are secreted by __________ cells.

Accepted Answer

A)  intrinsic factor; parietal
B)  bile salts; chief
C)  lecithin; hepatic
D)  hydrochloric acid; parietal
E)  enterokinase; mucousF) All of the above
G) D) and E)

Question 3

Which of the following is not a component of the pancreatic juice?

Accepted Answer

A)  Trypsinogen
B)  Chymotrypsinogen
C)  Deoxyribonuclease
D)  Sodium bicarbonate
E)  EnterokinaseF) A) and B)
G) C) and E)

Question 4

The small intestine is suspended from the abdominal wall by the ___________.

Accepted Answer

A)  falciform ligament
B)  mesentery
C)  greater omentum
D)  lesser omentum
E)  esophageal hiatusF) B) and C)
G) A) and B)

Question 5

The digestive system processes food,extracts nutrients,and eliminates the residue.

Accepted Answer

A) True 
 B)False

Question 6

Gastric juice consists entirely of water and hydrochloric acid.

Accepted Answer

A) True 
 B)False

Question 7

The large intestine is longer than the small intestine.

Accepted Answer

A) True 
 B)False

Question 8

Contact digestion takes place in/at the __________.

Accepted Answer

A)  gastric pits
B)  surface of the gastric mucosa
C)  intestinal crypts
D)  brush border of the small intestine
E)  cytoplasm in the cells of the small intestineF) None of the above
G) C) and E)

Question 9

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

Accepted Answer

A)  insulin
B)  cholecystokinin (CCK) 
C)  secretin
D)  glucagon
E)  gastrinF) A) and B)
G) None of the above

Question 10

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) A) and C)
G) D) and E)

Question 11

Which of the following is not normally found in saliva?

Accepted Answer

A)  Mucus
B)  Lysozyme
C)  Amylase
D)  Lipase
E)  ProteaseF) All of the above
G) A) and D)

Question 12

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) A) and B)
G) A) and C)

Question 13

The __________ of the small intestine is/are similar to the __________ of the stomach.

Accepted Answer

A)  villi; pyloric glands
B)  rugae; Peyer patches
C)  intestinal crypts; gastric pits
D)  goblet cells; parietal cells
E)  pyloric sphincter; ileocecal valveF) B) and C)
G) A) and E)

Question 14

The __________ regulates digestive tract motility,secretion,and blood flow.Its neurons are found in the __________.

Accepted Answer

A)  autonomic nervous system; serosa
B)  central nervous system; muscularis externa and muscularis mucosae
C)  enteric nervous system; submucosa and muscularis externa
D)  visceral sensory division; muscularis externa and submucosa
E)  visceral motor division; mucosa and submucosaF) A) and E)
G) D) and E)

Question 15

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 C)
G) All of the above

Question 16

The three most abundant classes of nutrients are __________.

Accepted Answer

A)  carbohydrates, proteins, and minerals
B)  fats, proteins, and carbohydrates
C)  proteins, nucleic acids, and carbohydrates
D)  triglycerides, starches, and proteins
E)  proteins, fats, and mineralsF) B) and D)
G) C) and E)

Question 17

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) B) and E)
G) C) and E)

Question 18

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) A) and B)
G) A) and C)

Question 19

Most fat is digested by pancreatic lipase.

Accepted Answer

A) True 
 B)False

Question 20

Odor,sight,and taste stimulate salivatory nuclei in the cerebral cortex.

Accepted Answer

A) True 
 B)False

Exam 25: The Digestive System

Odor,sight,and taste stimulate salivatory nuclei in the cerebral cortex.

Correct AnswerverifiedShow Answer

Necessary for Vitamin B12 absorption,__________ is/are secreted by __________ cells.

Correct AnswerverifiedShow Answer

The digestive system processes food,extracts nutrients,and eliminates the residue.

Correct AnswerverifiedShow Answer

Which of the following is not normally found in saliva?

Correct AnswerverifiedShow Answer

The three most abundant classes of nutrients are __________.

Correct AnswerverifiedShow Answer

Which of the following is not a component of the pancreatic juice?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Contact digestion takes place in/at the __________.

Correct AnswerverifiedShow Answer

The __________ regulates digestive tract motility,secretion,and blood flow.Its neurons are found in the __________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The large intestine is longer than the small intestine.

Correct AnswerverifiedShow Answer

Gastric juice consists entirely of water and hydrochloric acid.

Correct AnswerverifiedShow Answer

The enterogastric reflex serves to __________.

Correct AnswerverifiedShow Answer

Most fat is digested by pancreatic lipase.

Correct AnswerverifiedShow Answer

The __________ of the small intestine is/are similar to the __________ of the stomach.

Correct AnswerverifiedShow Answer

The small intestine is suspended from the abdominal wall by the ___________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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Necessary for Vitamin B₁₂ absorption, is/are secreted by cells.

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

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The regulates digestive tract motility,secretion,and blood flow.Its neurons are found in the .

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

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The of the small intestine is/are similar to the of the stomach.

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

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