Question 1

Factors in the duodenum influence the rate of gastric emptying.

Accepted Answer

A) True 
 B)False

Question 2

During vomiting

Accepted Answer

A)   The diaphragm contracts.
B)   The abdominal muscles contract.
C)   The stomach contracts.
D)   The diaphragm and the abdominal muscles contract.
E)   The abdominal muscles and the stomach contracts.

Question 3

Which statement is incorrect?

Accepted Answer

A)   Absorption of salt and water converts the colonic contents into fecal material.
B)   Colonic bacteria digest cellulose for their own growth and reproduction.
C)   When mass movements of the colon propel feces into the rectum, stimulation of the stretch receptors in the rectal wall reflexively causes contraction of the internal and external anal sphincters to prevent defecation from occurring until an opportune time.
D)   No digestive enzymes are secreted by the colon.
E)   Haustral contractions in the colon are a type of mixing motility.

Question 4

Which of the following substances is a product from the chemical breakdown of starch?

Accepted Answer

A)   amino acids
B)   glucose
C)   monoglycerides
D)   bile salts
E)   fatty acids

Question 5

Pernicious anemia can occur when:

Accepted Answer

A)   The stomach has been removed.
B)   The terminal ileum has been removed.
C)   There is a deficiency of intrinsic factor.
D)   All of these
E)   The stomach has been removed and there is a deficiency of intrinsic factor.

Question 6

Which of the following statements concerning HCl secretion by the stomach is correct?

Accepted Answer

A)   HCl inactivates salivary amylase and the pancreatic enzymes.
B)   HCl activates pepsinogen.
C)   It establishes a low pH in the stomach.
D)   Oxyntic cells are responsible for it.
E)   All of these.

Question 7

The large intestine consists of the duodenum, jejunum, and ileum.

Accepted Answer

A) True 
 B)False

Question 8

The major chemical digestive activity occurring in the stomach is

Accepted Answer

A)   digestion of starch
B)   digestion of protein
C)   digestion of fat
D)   absorption of monosaccharides
E)   digestion of vitamins

Question 9

Bile salts are derivatives of cholesterol.

Accepted Answer

A) True 
 B)False

Question 10

Chewing increases which of the following secretions?

Accepted Answer

A)   Salivary secretion
B)   Gastric secretion
C)   Pancreatic secretion
D)   Salivary secretion and Gastric secretion
E)   All of these

Question 11

The parietal cells secrete both pepsinogen and intrinsic factor.

Accepted Answer

A) True 
 B)False

Question 12

The presence of protein in the stomach stimulates the release of histamine, which in turn promotes HCl and pepsinogen secretion.

Accepted Answer

A) True 
 B)False

Question 13

Complete each of the following statments.
The ____________________ is the shortest part of the small intestine.

Accepted Answer

The answer of Complete each of the following statments.
The ____________________...

Question 14

The principal clinical manifestation of pancreatic exocrine insufficiency is incomplete protein digestion resulting from the deficiency of the powerful pancreatic proteolytic enzymes.

Accepted Answer

A) True 
 B)False

Question 15

The swallowing center is located in the

Accepted Answer

A)   cerebral cortex
B)   medulla
C)   hypothalamus
D)   throat
E)   spinal cord

Question 16

Receptive relaxation refers to relaxation of the

Accepted Answer

A)   pharyngoesophageal sphincter during swallowing
B)   pyloric sphincter when the duodenum is prepared to receive the chyme
C)   external anal sphincter when the individual is receptive to the defecation reflex
D)   stomach as it starts to fill, thereby allowing an increase in volume with very little increase in pressure
E)   none of these

Question 17

Migration of a new intestinal epithelial cell from the crypt at the base of the villus to the tip of the villus requires about three weeks.

Accepted Answer

A) True 
 B)False

Question 18

Fats are digested to

Accepted Answer

A)   amino acids
B)   cellulose
C)   fatty acids and glycerol
D)   fructose
E)   monosaccharides

Question 19

Which of the following is not a component of saliva?

Accepted Answer

A)   amylase
B)   mucus
C)   pepsin
D)   lysozyme
E)   water

Question 20

The ileocecal juncture serves as a barrier to prevent bacteria-laden contents of the large intestine from contaminating the small intestine.

Accepted Answer

A) True 
 B)False

Exam 16: A--The Digestive System

Complete each of the following statments. The ____________________ is the shortest part of the small intestine.

Correct AnswerverifiedShow Answer

The ileocecal juncture serves as a barrier to prevent bacteria-laden contents of the large intestine from contaminating the small intestine.

Correct AnswerverifiedShow Answer

Which of the following substances is a product from the chemical breakdown of starch?

Correct AnswerverifiedShow Answer

Migration of a new intestinal epithelial cell from the crypt at the base of the villus to the tip of the villus requires about three weeks.

Correct AnswerverifiedShow Answer

The large intestine consists of the duodenum, jejunum, and ileum.

Correct AnswerverifiedShow Answer

Which of the following is not a component of saliva?

Correct AnswerverifiedShow Answer

Factors in the duodenum influence the rate of gastric emptying.

Correct AnswerverifiedShow Answer

During vomiting

Correct AnswerverifiedShow Answer

Which of the following statements concerning HCl secretion by the stomach is correct?

Correct AnswerverifiedShow Answer

The presence of protein in the stomach stimulates the release of histamine, which in turn promotes HCl and pepsinogen secretion.

Correct AnswerverifiedShow Answer

Receptive relaxation refers to relaxation of the

Correct AnswerverifiedShow Answer

Which statement is incorrect?

Correct AnswerverifiedShow Answer

Bile salts are derivatives of cholesterol.

Correct AnswerverifiedShow Answer

The swallowing center is located in the

Correct AnswerverifiedShow Answer

Chewing increases which of the following secretions?

Correct AnswerverifiedShow Answer

The parietal cells secrete both pepsinogen and intrinsic factor.

Correct AnswerverifiedShow Answer

Fats are digested to

Correct AnswerverifiedShow Answer

The principal clinical manifestation of pancreatic exocrine insufficiency is incomplete protein digestion resulting from the deficiency of the powerful pancreatic proteolytic enzymes.

Correct AnswerverifiedShow Answer

Pernicious anemia can occur when:

Correct AnswerverifiedShow Answer

The major chemical digestive activity occurring in the stomach is

Correct AnswerverifiedShow Answer

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