Question 1

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 mucous produced by the stomach.F) C) and D)
G) None of the above

Question 2

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 C)
G) None of the above

Question 3

Feces consist of

Accepted Answer

A)   water.
B)   undigestible food.
C)   bacteria.
D)   sloughed-off epithelial cells.
E)   All of these are found in feces.F) A) and E)
G) B) and E)

Question 4

In comparison to a low-density lipoprotein (LDL) , a high density lipoprotein (HDL)  contains

Accepted Answer

A)   less lipid.
B)   less protein.
C)   more cholesterol.
D)   more carbohydrate.
E)   more amino acids.F) A) and E)
G) A) and D)

Question 5

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 enzymesF) A) and C)
G) All of the above

Question 6

A blockage in the colon where the ascending colon turns to become the transverse colon would occur at the

Accepted Answer

A)   ileocecal valve.
B)   hepatic flexure.
C)   splenic flexure.
D)   cardiac sphincter.
E)   gastric flexure.F) A) and C)
G) A) and B)

Question 7

Match the secretion with the correct cell type.
-hydrochloric acid

Accepted Answer

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

Question 8

Abdominal organs that lie against the body wall and have no mesenteries are said to be

Accepted Answer

A)   retroperitoneal.
B)   antiperitoneal.
C)   falciperitoneal.
D)   hyperperitoneal.
E)   mesoperitoneal.F) All of the above
G) D) and E)

Question 9

Enzymes that digest carbohydrates include

Accepted Answer

A)   peptidases.
B)   amylase, maltase, and sucrase.
C)   lipase.
D)   maltase and lipase.
E)   trypsin and chymotrypsin.F) A) and D)
G) C) and D)

Question 10

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 disaccharidesF) A) and E)
G) D) and E)

Question 11

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

Accepted Answer

A)  salivary glands
B)  stomach
C)  liver
D)  small intestine
E)  pancreasF) A) and B)
G) B) and E)

Question 12

A mixing contraction in the small intestine is called

Accepted Answer

A)   peristalsis.
B)   segmental contraction.
C)   deglutition.
D)   mass movement.E) B) and D)
F) None of the above

Question 13

Match the function with its appropriate description.
-elimination

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) A) and E)
G) None of the above

Question 14

All of the following are muscles of mastication, except the ______________.

Accepted Answer

A)   buccinator
B)   temporalis
C)   masseter
D)   medial pterygoid
E)   lateral pterygoidF) All of the above
G) C) and D)

Question 15

The major types of enteric neurons include all of the following, except ______________.

Accepted Answer

A)   neurons that detect changes in chemical composition
B)   neurons that stimulate or inhibit smooth muscle contractions
C)   neurons that connect sensory and motor neurons
D)   neurons that suppress epithelial secretionsE) C) and D)
F) A) and C)

Question 16

The epiglottis covers the opening into the larynx during

Accepted Answer

A)   the voluntary phase of swallowing.
B)   the pharyngeal phase of swallowing.
C)   the esophageal phase of swallowing.
D)   the gastric phase of swallowing.
E)   the oral phase of swallowing.F) A) and B)
G) B) and C)

Question 17

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.F) B) and E)
G) A) and C)

Question 18

Match the function with its appropriate description.
-mastication

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

Question 19

Match the cell type with its function.
-granular cells

Accepted Answer

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

Question 20

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) B) and E)
G) A) and B)

Exam 24: Digestive System

Enzymes that digest carbohydrates include

Correct AnswerverifiedShow Answer

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

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Match the cell type with its function. -absorptive cells

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Match the cell type with its function. -granular cells

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The major types of enteric neurons include all of the following, except ______________.

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Feces consist of

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Match the function with its appropriate description. -mastication

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In comparison to a low-density lipoprotein (LDL) , a high density lipoprotein (HDL) contains

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Match the function with its appropriate description. -elimination

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

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Match the secretion with the correct cell type. -hydrochloric acid

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Which of the following statements regarding swallowing is true?

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

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Abdominal organs that lie against the body wall and have no mesenteries are said to be

Correct AnswerverifiedShow Answer

Reflux of gastric contents into the esophagus occurs because of

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All of the following are muscles of mastication, except the ______________.

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

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A mixing contraction in the small intestine is called

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A blockage in the colon where the ascending colon turns to become the transverse colon would occur at the

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The epiglottis covers the opening into the larynx during

Correct AnswerverifiedShow Answer

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