Question 1

The distention of the stomach by food is the primary stimulus to begin the

Accepted Answer

A)   cephalic phase of gastric secretion.
B)   gastric phase of gastric secretion.
C)   intestinal phase of gastric secretion.
D)   cystic phase of gastric secretion.
E)   hepatic phase of gastric secretion.

Question 2

Which of the following is NOT a muscle of mastication?

Accepted Answer

A)   temporalis
B)   masseter
C)   medial and lateral pterygoids
D)   buccinator

Question 3

Which layer of the small intestine wall contains cells with microvilli?

Accepted Answer

A)   submucosa
B)   mucosa
C)   muscularis
D)   serosa
E)   adventitia

Question 4

Pepsinogen

Accepted Answer

A)   is secreted by parietal cells.
B)   is activated by salivary amylase in swallowed food.
C)   is packaged in zymogen granules.
D)   operates optimally at a pH of 5 or more.
E)   helps to form peptide bonds.

Question 5

What are the two major neurotransmitters of the ENS in the digestive tract?

Accepted Answer

A)   epinephrine and serotonin
B)   epinephrine and norepinephrine
C)   acetylcholine and epinephrine
D)   norepinephrine and acetylcholine

Question 6

The digestive functions performed by saliva and salivary amylase respectively are

Accepted Answer

A)   flushing and protein digestion.
B)   swallowing and fat digestion.
C)   peristalsis and polysaccharide digestion.
D)   moistening and starch digestion.
E)   None of these choices is correct.

Question 7

Match the enzyme with the products of its digestive activity.
-carboxypeptidase

Accepted Answer

A)  glucose and galactose
B)  amino acids
C)  fatty acids and glycerol
D)  maltose and isomaltose
E)  polysaccharides and disaccharides

Question 8

-What does "C" represent on the diagram?

Accepted Answer

A)   small intestine
B)   large intestine
C)   esophagus
D)   stomach
E)   liver

Question 9

Match the secretion with the correct cell type.
-bile

Accepted Answer

A)  endocrine cells
B)  hepatocyte
C)  parietal cells
D)  acinar cells
E)  goblet cells

Question 10

The gallbladder contracts in response to the hormone

Accepted Answer

A)   secretin.
B)   cholecystokinin.
C)   gastrin.
D)   somatostatin.
E)   insulin.

Question 11

Arrange the following in order from largest to smallest: (1)  dipeptide
(2)  protein
(3)  amino acid
(4)  polypeptide

Accepted Answer

A)   3, 1, 4, 2
B)   4, 1, 2, 3
C)   2, 4, 1, 3
D)   1, 2, 3, 4
E)   2, 4, 3, 1

Question 12

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

Question 13

Match the organ with the appropriate function.
-gallbladder

Accepted Answer

A)  secretion of saliva
B)  manipulation of food
C)  swallowing
D)  storage of bile
E)  protection of small intestinal wall

Question 14

Which of the following enzymes digests protein?

Accepted Answer

A)   bile
B)   pepsin
C)   isomaltose
D)   sucrase
E)   lipase

Question 15

Match the cell type with its function.
-absorptive cells

Accepted Answer

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

Question 16

-The figure illustrates bile drainage. What does "A" represent?

Accepted Answer

A)   hepatopancreatic ampulla
B)   pancreatic duct
C)   common hepatic duct
D)   common bile duct
E)   cystic duct

Question 17

The intestinal phase of gastric secretion

Accepted Answer

A)   is controlled by the entrance of acidic chyme into the duodenum.
B)   leads to increased gastric secretion if duodenal pH falls below 2.
C)   only stimulates gastric secretion.
D)   will decrease gastric secretion when gastrin is released by the duodenum.
E)   is controlled by the entrance of alkaline material into the small intestines.

Question 18

Which of the following is true?

Accepted Answer

A)   Peptidases are made in the large intestine.
B)   Intestinal epithelial cells absorb more dipeptides and tripeptides than single amino acids.
C)   The hepatic artery transports amino acids from the small intestine to the liver.
D)   Amino acids leave intestinal epithelial cells and enter the lacteals.
E)   Protein digestion starts in the duodenum.

Question 19

Teeth in adults

Accepted Answer

A)   are replaced by osteoblast activity if they are extracted.
B)   are distributed so that there is one canine tooth in each half jaw.
C)   are all of the same type - molars.
D)   are composed of living cells called enamel cells.
E)   do not play a role in speech.

Question 20

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.

Exam 24: Digestive System

Which of the following enzymes digests protein?

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-The figure illustrates bile drainage. What does "A" represent?

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Gastrocolic reflexes are reflexes that

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What are the two major neurotransmitters of the ENS in the digestive tract?

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Teeth in adults

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Match the disorder with the best description. -hemorrhoids

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Match the cell type with its function. -absorptive cells

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Which of the following is true?

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Which of the following is NOT a muscle of mastication?

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Match the secretion with the correct cell type. -bile

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-What does "C" represent on the diagram?

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The digestive functions performed by saliva and salivary amylase respectively are

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The intestinal phase of gastric secretion

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Pepsinogen

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The gallbladder contracts in response to the hormone

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Which layer of the small intestine wall contains cells with microvilli?

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Match the organ with the appropriate function. -gallbladder

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Arrange the following in order from largest to smallest: (1) dipeptide (2) protein (3) amino acid (4) polypeptide

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Match the enzyme with the products of its digestive activity. -carboxypeptidase

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The distention of the stomach by food is the primary stimulus to begin the

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