Question 1

The longitudinal layer of smooth muscle in the large intestinal wall forms three bands called the

Accepted Answer

A)   teniae coli.
B)   haustra.
C)   coli longitudini.
D)   omental appendages.
E)   rugae.F) B) and E)
G) A) and C)

Question 2

Duodenal gland secretion prevents

Accepted Answer

A)   digestive enzyme release.
B)   release of bile from the liver.
C)   irritation of the duodenal mucosa by acidic chyme and digestive enzymes.
D)   the release of insulin.
E)   peristalsis.F) A) and C)
G) All of the above

Question 3

What is the main stimulus for bile secretion from the gallbladder?

Accepted Answer

A)   cholecystokinin
B)   vagal stimulation
C)   secretin
D)   large amounts of protein in the chymeE) None of the above
F) A) and D)

Question 4

Match the cell type with its function.
-goblet cells

Accepted Answer

A)  produce hormones
B)  produce mucus
C)  may protect intestinal epithelium
D)  synthesize bile
E)  produce digestive enzymesF) A) and E)
G) A) 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) A) and D)
G) A) and C)

Question 6

Enzymes secreted by the small intestine include

Accepted Answer

A)   disaccharidases.
B)   secretin.
C)   cholecystokinin.
D)   bile.
E)   histamine.F) D) and E)
G) A) and E)

Question 7

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) B) and D)
F) A) and C)

Question 8

What keeps the bolus from entering the larynx during deglutition?

Accepted Answer

A)   the epiglottis
B)   the uvula
C)   the tongue
D)   the upper esophageal sphincterE) A) and D)
F) All of the above

Question 9

The muscle that forms the majority of the lips is the _____ and the muscle that forms the majority of the cheeks is the _____.

Accepted Answer

A)   orbicularis oris; buccinator
B)   buccinators; orbicularis oris
C)   masseter; buccinator
D)   buccinators; masseter
E)   orbicularis oculi; masseterF) A) and C)
G) C) and D)

Question 10

Gastrocolic reflexes are reflexes that

Accepted Answer

A)   empty the stomach.
B)   release gastric secretions into the stomach.
C)   cause mass movements of the colon when food is present in the stomach.
D)   lead to mass movements of the colon in response to food in the duodenum.
E)   stop movement in the colon.F) None of the above
G) B) and E)

Question 11

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) A) and B)
F) A) and C)

Question 12

Which part of the pharynx is NOT involved with food transport?

Accepted Answer

A)   nasopharynx
B)   oropharynx
C)   laryngopharynx
D)   All the the choices are involved with food transportE) B) and C)
F) A) and D)

Question 13

Which of the following enzymes digests protein?

Accepted Answer

A)   bile
B)   pepsin
C)   isomaltose
D)   sucrase
E)   lipaseF) C) and D)
G) A) and B)

Question 14

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

Accepted Answer

A)   gastric
B)   cardiac
C)   vagus
D)   accessoryE) B) and D)
F) All of the above

Question 15

What is the function of the gallbladder?

Accepted Answer

A)   produce bile
B)   store bicarbonate
C)   add pigment to bile
D)   store and concentrate bileE) A) and C)
F) B) and D)

Question 16

Diffusion and active transport are likely to be important in

Accepted Answer

A)   mastication of food.
B)   absorption of food.
C)   elimination of undigested food.
D)   propulsion of food through the digestive tract.
E)   mixing of food.F) A) and B)
G) D) and E)

Question 17

Small droplets of digested lipids surrounded by bile salts are called

Accepted Answer

A)   chylomicrons.
B)   micelles.
C)   monoglycerides.
D)   diglycerides.
E)   lacteals.F) A) and B)
G) A) and E)

Question 18

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

Question 19

Bile secretion is

Accepted Answer

A)   performed continuously by the liver.
B)   is stimulated by sympathetic nerves.
C)   is stimulated by decreased amounts of bile salts.
D)   stimulated by increased vitamin B12 storage.
E)   controlled by the gallbladder.F) A) and D)
G) A) and C)

Question 20

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) A) and B)
F) A) and C)

Exam 24: Digestive System

The oral cavity

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Diffusion and active transport are likely to be important in

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Gastrocolic reflexes are reflexes that

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What is the function of the gallbladder?

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Which of the following enzymes digests protein?

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What is the main stimulus for bile secretion from the gallbladder?

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Which part of the pharynx is NOT involved with food transport?

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

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Match the cell type with its function. -goblet cells

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Enzymes secreted by the small intestine include

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

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What keeps the bolus from entering the larynx during deglutition?

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Small droplets of digested lipids surrounded by bile salts are called

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

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The anal canal

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Duodenal gland secretion prevents

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The muscle that forms the majority of the lips is the _____ and the muscle that forms the majority of the cheeks is the _____.

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Bile secretion is

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

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The longitudinal layer of smooth muscle in the large intestinal wall forms three bands called the

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The muscle that forms the majority of the lips is the _ and the muscle that forms the majority of the cheeks is the _.

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