Question 1

Match the enzyme with the products of its digestive activity.
-Pancreatic amylase

Accepted Answer

A)  Glucose and galactose
B)  Amino acids
C)  Fatty acids and glycerol
D)  Maltose and isomaltose
E)  Polysaccharides and disaccharidesF) A) and C)
G) A) and D)

Question 2

Which of the following is mismatched?

Accepted Answer

A)   Segmental contractions - mix intestinal contents
B)   Peristaltic contractions - propel intestinal contents along G.I. tract
C)   Sympathetic nerve fibers - increase intestinal motility
D)   Distention of intestinal wall - increases intestinal motility
E)   Parasympathetic nerve fibers - stimulate secretion of pancreatic juicesF) All of the above
G) D) and E)

Question 3

Celiac disease causes degeneration of the villi of the small intestine. What is a likely affect of this degeneration?

Accepted Answer

A)   Decrease in absorption due to reduced surface area
B)   Increased permeability of the lining of the digestive tract, allowing more material to move into the blood
C)   Lack of lipid absorption as the villi are important for lipid absorption
D)   None of the choices are correct.E) A) and B)
F) All of the above

Question 4

Which of the following is correctly matched?

Accepted Answer

A)   Mucosa - controls peristalsis
B)   Serosa - contains an extensive supply of nerves and blood vessels
C)   Submucosa - lamina propria
D)   Serosa - increased surface area
E)   Muscularis - responsible for peristalsisF) A) and E)
G) A) and D)

Question 5

What muscle forms the lips?

Accepted Answer

A)   Buccinator muscle
B)   Orbicularis oculi muscle
C)   Orbicularis oris muscle
D)   Labial frenulum muscleE) All of the above
F) B) and C)

Question 6

The enteric nervous system acts independently of the CNS to control local reflexes in the digestive tract.

Accepted Answer

A) True 
 B)False  True

Question 7

Enterokinase ________.

Accepted Answer

A)   is a hormone
B)   triggers the release of bile from the gallbladder
C)   activates trypsinogen
D)   increases duodenal motility
E)   digests proteinsF) C) and D)
G) A) and C)

Question 8

Gastritis, peptic ulcers, and gastric cancer can all be caused by

Accepted Answer

A)   Helicobacter pylori, a bacterium.
B)   increased secretion of gastric bicarbonate.
C)   pH of the stomach contents continuously greater than 4.
D)   increased mucus production by the neck cells.
E)   None of the choices are correct.F) A) and C)
G) A) and B)

Question 9

The salivary glands that open into the oral cavity beside the frenulum of the tongue are the ________ glands.

Accepted Answer

A)   parotid
B)   sublingual
C)   submandibular
D)   labial
E)   lacrimalF) A) and C)
G) C) and E) C

Question 10

Nancy has several dental caries on the visible surface of one of her molars. The caries have eroded through to the pulp cavity. Which of the following accurately lists the layers affected by the caries?

Accepted Answer

A)   Dentin, enamel, cementum
B)   Enamel, dentin
C)   Cementum, dentin
D)   Enamel onlyE) A) and C)
F) All of the above B

Question 11

How are ions such as sodium, potassium, calcium, magnesium, and phosphate transported from the intestinal lumen?

Accepted Answer

A)   Passive transport
B)   Osmosis
C)   Diffusion
D)   Active transportE) All of the above
F) None of the above

Question 12

The chemical digestion of the disaccharides occurs in the ________.

Accepted Answer

A)   small intestine
B)   large intestine
C)   mouth
D)   stomach
E)   esophagusF) A) and B)
G) A) and C)

Question 13

Use the key to choose the best answer.
-(1)  pH in the stomach during digestion
(2)  pH in the duodenum during digestion

Accepted Answer

A)  First item is greater than the second item.
B)  First item is less than the second item.
C)  First item is equal or nearly equal to the second item.D) All of the above
E) B) and C)

Question 14

Match the enzyme or hormone with the organ that produces it.
-Gastric lipase

Accepted Answer

A)  Salivary glands
B)  Stomach
C)  Liver
D)  Small intestine
E)  PancreasF) D) and E)
G) B) and D)

Question 15

The pyloric pump

Accepted Answer

A)   mixes stomach contents for digestion.
B)   causes hunger contractions.
C)   moves chyme through a partially closed pyloric opening.
D)   causes rugae to flatten.
E)   opens the pyloric sphincter completely.F) A) and D)
G) B) and D)

Question 16

The liver

Accepted Answer

A)   produces secretions that help neutralize stomach acids and emulsify fats.
B)   produces several digestive enzymes.
C)   stores vitamin C.
D)   receives oxygenated blood from the portal vein.
E)   cannot synthesize new molecules.F) D) and E)
G) A) and E)

Question 17

A cell needs a receptor in order to absorb LDLs. A disease that interferes with the functioning of these LDL receptors would

Accepted Answer

A)   increase serum cholesterol levels.
B)   decrease serum cholesterol levels.
C)   halt endocytosis.
D)   promote endocytosis.
E)   have no effect on serum cholesterol or endocytosis.F) B) and D)
G) B) and E)

Question 18

Which of the following is an end product of protein digestion?

Accepted Answer

A)   Glucose
B)   Amino acids
C)   LDL molecules
D)   Micelles
E)   Nucleic acidsF) B) and C)
G) None of the above

Question 19

Where does bile enter the duodenum?

Accepted Answer

A)   Cystic duct
B)   Hepatopancreatic ampulla
C)   Hepatic duct
D)   Duodenal ampullaE) A) and B)
F) B) and D)

Question 20

Match the enzyme or hormone with the organ that produces it.
-Disaccharidase

Accepted Answer

A)  Salivary glands
B)  Stomach
C)  Liver
D)  Small intestine
E)  PancreasF) A) and D)
G) A) and E)

Exam 24: Digestive System

Match the enzyme with the products of its digestive activity. -Pancreatic amylase

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Celiac disease causes degeneration of the villi of the small intestine. What is a likely affect of this degeneration?

Correct AnswerverifiedShow Answer

Which of the following is correctly matched?

Correct AnswerverifiedShow Answer

What muscle forms the lips?

Correct AnswerverifiedShow Answer

The enteric nervous system acts independently of the CNS to control local reflexes in the digestive tract.

Correct AnswerverifiedTrue

Enterokinase ________.

Correct AnswerverifiedShow Answer

Gastritis, peptic ulcers, and gastric cancer can all be caused by

Correct AnswerverifiedShow Answer

The salivary glands that open into the oral cavity beside the frenulum of the tongue are the ________ glands.

Correct AnswerverifiedC

Nancy has several dental caries on the visible surface of one of her molars. The caries have eroded through to the pulp cavity. Which of the following accurately lists the layers affected by the caries?

Correct AnswerverifiedB

How are ions such as sodium, potassium, calcium, magnesium, and phosphate transported from the intestinal lumen?

Correct AnswerverifiedShow Answer

The chemical digestion of the disaccharides occurs in the ________.

Correct AnswerverifiedShow Answer

Use the key to choose the best answer. -(1) pH in the stomach during digestion (2) pH in the duodenum during digestion

Correct AnswerverifiedShow Answer

Match the enzyme or hormone with the organ that produces it. -Gastric lipase

Correct AnswerverifiedShow Answer

The pyloric pump

Correct AnswerverifiedShow Answer

The liver

Correct AnswerverifiedShow Answer

A cell needs a receptor in order to absorb LDLs. A disease that interferes with the functioning of these LDL receptors would

Correct AnswerverifiedShow Answer

Which of the following is an end product of protein digestion?

Correct AnswerverifiedShow Answer

Where does bile enter the duodenum?

Correct AnswerverifiedShow Answer

Match the enzyme or hormone with the organ that produces it. -Disaccharidase

Correct AnswerverifiedShow Answer

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