Question 1

Pepsin would have the greatest activity

Accepted Answer

A) immediately upon secretion into the stomach. 
B) immediately upon entering the duodenum. 
C) when the pH of the chyme is greater than 3. 
D) when the pH of the chyme is less than 3. 
A) immediately upon secretion into the stomach. 
B) immediately upon entering the duodenum. 
C) when the pH of the chyme is greater than 3. 
D) when the pH of the chyme is less than 3.

Question 2

Aminopeptidase and carboxypeptidase are classified as endopeptidases.

Accepted Answer

A) True 
 B)False

Question 3

Pepsin would not be found in the stomach if the __________ cells were destroyed.

Accepted Answer

A) goblet 
B) parietal 
C) D cells 
D) chief or zymogenic 
A) goblet 
B) parietal 
C) D cells 
D) chief or zymogenic

Question 4

Why does the upper third of the esophagus have skeletal muscle in its wall?

Accepted Answer

A) so you do not choke 
B) the first phase of swallowing is voluntary 
C) so that peristalsis can occur 
D) the first phase of swallowing is involuntary 
A) so you do not choke 
B) the first phase of swallowing is voluntary 
C) so that peristalsis can occur 
D) the first phase of swallowing is involuntary

Question 5

Which of the following is NOT true about CCK (cholecystokinin)?

Accepted Answer

A) released in response to fat and protein in the chyme 
B) stimulates the production of pancreatic digestive enzymes 
C) uses cyclic AMP as the second messenger to pancreatic acinar cells 
D) controlled through a positive feedback loop 
A) released in response to fat and protein in the chyme 
B) stimulates the production of pancreatic digestive enzymes 
C) uses cyclic AMP as the second messenger to pancreatic acinar cells 
D) controlled through a positive feedback loop

Question 6

The major stimulus for the secretion of HCl during the cephalic phase of gastric regulation is

Accepted Answer

A) the smell of food. 
B) vagal stimulation of chief cells. 
C) release of histamine by ECL cells. 
D) vagal stimulation of parietal cells. 
A) the smell of food. 
B) vagal stimulation of chief cells. 
C) release of histamine by ECL cells. 
D) vagal stimulation of parietal cells.

Question 7

Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms.

Accepted Answer

A) True 
 B)False

Question 8

Deglutition is coordinated by the swallowing center in the

Accepted Answer

A) brain stem. 
B) cerebrum. 
C) spinal cord. 
D) cerebellum. 
A) brain stem. 
B) cerebrum. 
C) spinal cord. 
D) cerebellum.

Question 9

What role do bile salts play in digestion?

Accepted Answer

A) emulsify lipids for digestion by enzymes 
B) gives color to the feces 
C) needed for water reabsorption 
D) They play no role in digestion. 
A) emulsify lipids for digestion by enzymes 
B) gives color to the feces 
C) needed for water reabsorption 
D) They play no role in digestion.

Question 10

Peristalsis is regulated by the

Accepted Answer

A) sympathetic nervous system. 
B) parasympathetic nervous system. 
C) enteric nervous system. 
D) somatic nervous system. 
A) sympathetic nervous system. 
B) parasympathetic nervous system. 
C) enteric nervous system. 
D) somatic nervous system.

Question 11

Helicobacter pylori is a bacterium associated with

Accepted Answer

A) peptic ulcers. 
B) hiatal hernia. 
C) acid reflux. 
D) pancreatitis. 
A) peptic ulcers. 
B) hiatal hernia. 
C) acid reflux. 
D) pancreatitis.

Question 12

Excess use of antibiotics can kill the normal intestinal microflora,increasing inflammation by pathogenic bacteria.

Accepted Answer

A) True 
 B)False

Question 13

An important function of the liver is producing ketone bodies from fatty acids.

Accepted Answer

A) True 
 B)False

Question 14

During the intestinal phase regulating gastric function

Accepted Answer

A) the vagus nerve stimulates gastrin secretion. 
B) stomach distension stimulates acid secretion. 
C) vagal nuclei are stimulated by smelling food. 
D) gastric emptying is inhibiteD. 
A) the vagus nerve stimulates gastrin secretion. 
B) stomach distension stimulates acid secretion. 
C) vagal nuclei are stimulated by smelling food. 
D) gastric emptying is inhibiteD.

Question 15

Diarrhea often results when the osmolarity of the fecal matter in the colon is increased.

Accepted Answer

A) True 
 B)False

Question 16

Sympathetic nerve fibers can cause the release of HCl from parietal cells.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is NOT a structure of the small intestine that increases its surface area?

Accepted Answer

A) rugae 
B) villi 
C) plicae circularis 
D) microvilli 
A) rugae 
B) villi 
C) plicae circularis 
D) microvilli

Question 18

__________ is a condition in which large number of liver lobules are destroyed and replaced by permanent,scar-like connective tissue.

Accepted Answer

A) Jaundice 
B) Hepatitis 
C) Cholecystitis 
D) Cirrhosis 
A) Jaundice 
B) Hepatitis 
C) Cholecystitis 
D) Cirrhosis

Question 19

Paracrine regulators are part of the extrinsic regulation of the GI tract.

Accepted Answer

A) True 
 B)False

Question 20

Bicarbonate that protects the duodenum from peptic ulcers comes from all of the following EXCEPT:

Accepted Answer

A) adherent layer of mucus 
B) Brunner's cells 
C) stomach 
D) pancreatic juice 
A) adherent layer of mucus 
B) Brunner's cells 
C) stomach 
D) pancreatic juice

Pepsin would have the greatest activity

Aminopeptidase and carboxypeptidase are classified as endopeptidases.

Pepsin would not be found in the stomach if the __________ cells were destroyed.

Why does the upper third of the esophagus have skeletal muscle in its wall?

Which of the following is NOT true about CCK (cholecystokinin)?

The major stimulus for the secretion of HCl during the cephalic phase of gastric regulation is

Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms.

Deglutition is coordinated by the swallowing center in the

What role do bile salts play in digestion?

Peristalsis is regulated by the

Helicobacter pylori is a bacterium associated with

Excess use of antibiotics can kill the normal intestinal microflora,increasing inflammation by pathogenic bacteria.

An important function of the liver is producing ketone bodies from fatty acids.

During the intestinal phase regulating gastric function

Diarrhea often results when the osmolarity of the fecal matter in the colon is increased.

Sympathetic nerve fibers can cause the release of HCl from parietal cells.

Which of the following is NOT a structure of the small intestine that increases its surface area?

__________ is a condition in which large number of liver lobules are destroyed and replaced by permanent,scar-like connective tissue.

Paracrine regulators are part of the extrinsic regulation of the GI tract.

Bicarbonate that protects the duodenum from peptic ulcers comes from all of the following EXCEPT:

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

Regulation and Metabolism

Reproduction

Filters

Exam 18: The Digestive System

Pepsin would have the greatest activity

Aminopeptidase and carboxypeptidase are classified as endopeptidases.

Pepsin would not be found in the stomach if the __________ cells were destroyed.

Why does the upper third of the esophagus have skeletal muscle in its wall?

Which of the following is NOT true about CCK (cholecystokinin)?

The major stimulus for the secretion of HCl during the cephalic phase of gastric regulation is

Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms.

Deglutition is coordinated by the swallowing center in the

What role do bile salts play in digestion?

Peristalsis is regulated by the

Helicobacter pylori is a bacterium associated with

Excess use of antibiotics can kill the normal intestinal microflora,increasing inflammation by pathogenic bacteria.

An important function of the liver is producing ketone bodies from fatty acids.

During the intestinal phase regulating gastric function

Diarrhea often results when the osmolarity of the fecal matter in the colon is increased.

Sympathetic nerve fibers can cause the release of HCl from parietal cells.

Which of the following is NOT a structure of the small intestine that increases its surface area?

__________ is a condition in which large number of liver lobules are destroyed and replaced by permanent,scar-like connective tissue.

Paracrine regulators are part of the extrinsic regulation of the GI tract.

Bicarbonate that protects the duodenum from peptic ulcers comes from all of the following EXCEPT:

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

Regulation and Metabolism

Reproduction

Filters