Question 1

Which of the following is NOT part of a portal triad?

Accepted Answer

A)   Hepatic artery
B)   Hepatic duct
C)   Hepatic portal vein
D)   Central veinE) B) and C)
F) All of the above

Question 2

What is the function of bicarbonate when it is secreted by the large intestine?

Accepted Answer

A)   It increases the pH of the feces, which are acidic because of bacterial secretions.
B)   It aids in the digestion of proteins.
C)   It decreases the pH of feces, which are alkaline because of bacterial secretions.
D)   It aids in the digestion of cellulose.E) None of the above
F) All of the above

Question 3

One of the major functions of the large intestine is to

Accepted Answer

A)   produce vitamin C.
B)   regulate the release of bile.
C)   break down hemoglobin to release bilirubin.
D)   convert chyme to feces.E) None of the above
F) All of the above

Question 4

Nutrient-rich blood from the digestive tract comes to the liver by way of the ________.

Accepted Answer

A)   hepatic artery
B)   hepatic portal vein
C)   hepatic vein
D)   inferior vena cava
E)   celiac trunkF) B) and E)
G) A) and E)

Question 5

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 B)
G) A) and E)

Question 6

How does the muscularis layer of the esophagus differ from the rest of the digestive tract?

Accepted Answer

A)   It is all skeletal muscle.
B)   The superior part is skeletal muscle.
C)   The inferior part is skeletal muscle.
D)   It has alternating smooth and skeletal muscle sections.E) B) and C)
F) None of the above

Question 7

Which of the following statements concerning digestion in the stomach is not true?

Accepted Answer

A)   Salivary amylase will eventually be inactivated in the stomach, halting carbohydrate digestion.
B)   Gastric lipase is produced in large volumes, allowing for high levels of lipid digestion.
C)   Proteins are digested by HCl only.
D)   All of the choices are correct.E) C) and D)
F) A) and D)

Question 8

Food in the stomach is squeezed and mixed with gastric juices, forming a semiliquid called ________.

Accepted Answer

A)   bolusin
B)   chyme
C)   bile
D)   phlegm
E)   fecesF) A) and B)
G) All of the above

Question 9

The salivary glands located just anterior to the ear are the ________ glands.

Accepted Answer

A)   parotid
B)   submandibular
C)   buccal
D)   labial
E)   sublingualF) A) and C)
G) None of the above

Question 10

The anal canal

Accepted Answer

A)   begins at the sigmoid colon and ends at the rectum.
B)   has an internal sphincter composed of smooth muscle.
C)   contains many goblet cells.
D)   contains tubular glands called crypts.
E)   has an external sphincter composed of smooth muscle.F) C) and E)
G) A) and D)

Question 11

Bile is produced by cells of the ________.

Accepted Answer

A)   duodenum
B)   liver
C)   gallbladder
D)   pancreas
E)   hepatopancreatic ampullaF) A) and D)
G) None of the above

Question 12

Which of the following occurs in the large intestine?

Accepted Answer

A)   Chemical digestion
B)   Mass movements
C)   Mastication
D)   Mixing waves
E)   NeutralizationF) None of the above
G) B) and E)

Question 13

The abdominal cavity is lined with ________.

Accepted Answer

A)   the omental bursa
B)   mesenteries
C)   the greater omentum
D)   parietal peritoneum
E)   superficial fasciaF) A) and B)
G) B) and D)

Question 14

Which of the following attaches the liver to the anterior abdominal wall?

Accepted Answer

A)   Greater omentum
B)   Lesser omentum
C)   Transverse mesocolon
D)   Falciform ligament
E)   Round ligamentF) A) and B)
G) B) and C)

Question 15

The formation of HCl in the stomach involves the

Accepted Answer

A)   active transport of H+ from parietal cells into the lumen of the stomach.
B)   exchange of Na+ for H+ in the transport process.
C)   active transport of Cl− from parietal cells into the lumen of the stomach.
D)   exchange of Na+ and bicarbonate ions.
E)   the combination of CO2 and water.F) None of the above
G) C) and D)

Question 16

If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?

Accepted Answer

A)   Amino acids
B)   Glucose
C)   Lipids
D)   Disaccharides
E)   MonosaccharidesF) D) and E)
G) B) and E)

Question 17

Which of the following statements regarding swallowing is true?

Accepted Answer

A)   The voluntary phase begins in the pharynx.
B)   In the pharyngeal phase, food is moved through the pharynx.
C)   The uvula rises during the esophageal phase.
D)   Peristalsis occurs in all phases of swallowing.
E)   Breathing occurs during swallowing.F) A) and B)
G) C) and E)

Question 18

Which disease is caused by the absence of enteric neurons in the distal large intestine?

Accepted Answer

A)   Hirschsprung disease
B)   Multiple endocrine neoplasia type 2
C)   Spastic colon
D)   GastroenteritisE) All of the above
F) A) and B)

Question 19

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 mucus produced by the stomach.F) B) and C)
G) B) and D)

Question 20

LDLs are taken into a cell by the process of ________.

Accepted Answer

A)   simple diffusion
B)   osmosis
C)   receptor mediated endocytosis
D)   HDL carrier molecules
E)   facilitated diffusionF) C) and E)
G) A) and E)

Exam 24: Digestive System

How does the muscularis layer of the esophagus differ from the rest of the digestive tract?

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The abdominal cavity is lined with ________.

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What is the function of bicarbonate when it is secreted by the large intestine?

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Bile is produced by cells of the ________.

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If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?

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Which of the following is NOT part of a portal triad?

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Which of the following statements concerning digestion in the stomach is not true?

Correct AnswerverifiedShow Answer

The salivary glands located just anterior to the ear are the ________ glands.

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Which of the following occurs in the large intestine?

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LDLs are taken into a cell by the process of ________.

Correct AnswerverifiedShow Answer

The formation of HCl in the stomach involves the

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Which disease is caused by the absence of enteric neurons in the distal large intestine?

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Which of the following attaches the liver to the anterior abdominal wall?

Correct AnswerverifiedShow Answer

Food in the stomach is squeezed and mixed with gastric juices, forming a semiliquid called ________.

Correct AnswerverifiedShow Answer

Nutrient-rich blood from the digestive tract comes to the liver by way of the ________.

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The anal canal

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Reflux of gastric contents into the esophagus occurs because of

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Intrinsic factor

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One of the major functions of the large intestine is to

Correct AnswerverifiedShow Answer

Which of the following statements regarding swallowing is true?

Correct AnswerverifiedShow Answer

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