Question 1

Blockage of the ileocecal valve would prevent

Accepted Answer

A)   pancreatic juice from entering the duodenum.
B)   bile from entering the duodenum.
C)   lymph from entering the jejunum.
D)   chyme from entering the ileum.
E)   chyme from entering the large intestine.F) A) and B)
G) C) and D)

Question 2

Chylomicrons

Accepted Answer

A)   are synthesized in intestinal epithelial cells.
B)   enter capillaries in the small intestine.
C)   help emulsify fats.
D)   are a rich source of carbohydrate.
E)   are synthesized in the lumen of the small intestines.F) A) and B)
G) A) and C)

Question 3

A proteolytic enzyme secreted by the pancreas is ________.

Accepted Answer

A)   ribonuclease
B)   chymotrypsin
C)   amylase
D)   enterogastrone
E)   pancreatic lipaseF) All of the above
G) B) and E)

Question 4

A large amount of adipose tissue accumulates in the ________.

Accepted Answer

A)   greater omentum
B)   lesser omentum
C)   coronary ligament
D)   sigmoid mesocolon
E)   visceral peritoneumF) A) and B)
G) C) and D)

Question 5

The oral cavity

Accepted Answer

A)   opens into the nasopharynx.
B)   directly connects with the esophagus.
C)   contains the parotid salivary glands.
D)   has boundaries that include the lips, palate, and cheeks.
E)   is lined with cuboidal epithelium.F) All of the above
G) A) and B)

Question 6

The gallbladder contracts in response to the hormone ________.

Accepted Answer

A)   secretin
B)   cholecystokinin (CCK) 
C)   gastrin
D)   somatostatin
E)   insulinF) C) and E)
G) A) and B)

Question 7

The digestive juice that contains enzymes capable of digesting all major food groups is ________.

Accepted Answer

A)   gastric juice
B)   biliary juice
C)   salivary juice
D)   pancreatic juice
E)   hepatic juiceF) C) and D)
G) B) and E)

Question 8

Which of the following might happen if a person begins laughing while swallowing a liquid?

Accepted Answer

A)   Laryngeal constriction forces liquid through the pharynx.
B)   Relaxation of the soft palate allows liquid to enter the nasal cavity.
C)   The tongue might be swallowed.
D)   Nothing; swallowing will be normal.
E)   Peristalsis will not begin.F) A) and B)
G) C) and D)

Question 9

Parasympathetic nerves extend to the digestive tract through the ________ nerve.

Accepted Answer

A)   gastric
B)   cardiac
C)   vagus
D)   accessoryE) A) and C)
F) None of the above

Question 10

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 B)
G) D) and E)

Question 11

What is the role of serotonin in the digestive tract?

Accepted Answer

A)   Decrease nausea
B)   Stimulate motility
C)   Hormone release
D)   Inhibit motilityE) A) and B)
F) A) and C)

Question 12

Which portion of the small intestine is most distal from the pylorus of the stomach?

Accepted Answer

A)   Jejunum
B)   Duodenum
C)   Ileum
D)   Common bile duct
E)   Hepatopancreatic ampullaF) None of the above
G) A) and E)

Question 13

Match the function with its appropriate description.
-Absorption

Accepted Answer

A)  Movement of molecules from digestive tract into blood
B)  Chewing of food
C)  Muscular contractions that propel food
D)  Removal of undigested wastes from body
E)  Breakdown of organic molecules with digestive enzymesF) D) and E)
G) A) and B)

Question 14

Saliva

Accepted Answer

A)   is produced only when there is food in the mouth.
B)   increases ulceration in the mouth.
C)   is responsible for peristalsis in the mouth.
D)   moistens food and begins starch digestion in the mouth.
E)   does not prevent bacterial infection in the mouth.F) All of the above
G) A) and B)

Question 15

Emulsification

Accepted Answer

A)   converts small lipid droplets into larger droplets.
B)   occurs in the gallbladder.
C)   chemically digests lipids.
D)   increases surface area for lipid digestion.
E)   involves enzymes.F) B) and E)
G) A) and B)

Question 16

Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

Accepted Answer

A)   The first phase of swallowing is under involuntary control.
B)   The second phase of swallowing is under voluntary control.
C)   The first phase of swallowing is under voluntary control.
D)   The second phase of swallowing is under involuntary control.E) A) and B)
F) B) and D)

Question 17

An organ is described as follows: cords of cells radiating outward from a central vein with sinusoids between the cords of cells. The organ having this histological structure is the ________.

Accepted Answer

A)   pancreas
B)   spleen
C)   liver
D)   stomach
E)   gallbladderF) A) and D)
G) All of the above

Question 18

Which of the following pairs describing structures of teeth is mismatched?

Accepted Answer

A)   Crown - enamel
B)   Root - root canal
C)   Alveoli - periodontal ligament
D)   Pulp cavity - cementum
E)   Apical foramen - blood supplyF) C) and D)
G) D) and E)

Question 19

Which of the following enzymes functions at the lowest pH?

Accepted Answer

A)   Salivary amylase
B)   Pancreatic amylase
C)   Pepsin
D)   Trypsin
E)   DipeptidaseF) B) and D)
G) A) and B)

Question 20

The enteric plexus

Accepted Answer

A)   is found in the mucosa.
B)   consists of the myenteric plexus and the celiac plexus.
C)   helps control movement and secretions of the digestive tract.
D)   contains parasympathetic neurons.
E)   Both "Helps control movement and secretions of the digestive tract" and "Contains parasympathetic neurons" are correctF) C) and D)
G) A) and D)

Exam 24: Digestive System

Match the function with its appropriate description. -Absorption

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A proteolytic enzyme secreted by the pancreas is ________.

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The digestive juice that contains enzymes capable of digesting all major food groups is ________.

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Which of the following enzymes functions at the lowest pH?

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Which of the following might happen if a person begins laughing while swallowing a liquid?

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A large amount of adipose tissue accumulates in the ________.

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Chylomicrons

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Which portion of the small intestine is most distal from the pylorus of the stomach?

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The gastric phase of gastric secretion

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Blockage of the ileocecal valve would prevent

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Saliva

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Which of the following pairs describing structures of teeth is mismatched?

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The gallbladder contracts in response to the hormone ________.

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The oral cavity

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An organ is described as follows: cords of cells radiating outward from a central vein with sinusoids between the cords of cells. The organ having this histological structure is the ________.

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Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

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Emulsification

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Parasympathetic nerves extend to the digestive tract through the ________ nerve.

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The enteric plexus

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What is the role of serotonin in the digestive tract?

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