Question 1

Alcohol

Accepted Answer

A)  inhibits gastric secretion 
B)  can be absorbed more rapidly from the small intestine than from the stomach 
C)  inhibits gastric emptying through the enterogastric reflex 
D)  inhibits gastric secretion and can be absorbed more rapidly from the small intestine than from the stomach 
E)  all of these 
A)  inhibits gastric secretion 
B)  can be absorbed more rapidly from the small intestine than from the stomach 
C)  inhibits gastric emptying through the enterogastric reflex 
D)  inhibits gastric secretion and can be absorbed more rapidly from the small intestine than from the stomach 
E)  all of these

Question 2

After pepsinogen is activated, it

Accepted Answer

A)  autocatalytically activates more pepsinogen 
B)  activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred 
C)  inhibits the pyloric gland area in a negative-feedback fashion 
D)  autocatalytically activates more pepsinogen and activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred 
E)  none of these 
A)  autocatalytically activates more pepsinogen 
B)  activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred 
C)  inhibits the pyloric gland area in a negative-feedback fashion 
D)  autocatalytically activates more pepsinogen and activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred 
E)  none of these

Question 3

Which tissue layer provides for primary digestive motility?

Accepted Answer

A)  mucosa 
B)  submucosa 
C)  muscularis mucosae 
D)  muscularis externa 
E)  mesentery 
A)  mucosa 
B)  submucosa 
C)  muscularis mucosae 
D)  muscularis externa 
E)  mesentery

Question 4

Protein digestion is initiated by salivary amylase.

Accepted Answer

A) True 
 B)False

Question 5

Intrinsic factor is necessary for the absorption of vitamin B12.

Accepted Answer

A) True 
 B)False

Question 6

The major metabolic waste product eliminated in the feces is bilirubin.

Accepted Answer

A) True 
 B)False

Question 7

Carbohydrates are absorbed as

Accepted Answer

A)  polysaccharides 
B)  disaccharides 
C)  monosaccharides 
D)  amino acids 
E)  fatty acids 
A)  polysaccharides 
B)  disaccharides 
C)  monosaccharides 
D)  amino acids 
E)  fatty acids

Question 8

The function of mixing movements is to promote digestion and facilitate absorption.

Accepted Answer

A) True 
 B)False

Question 9

Most of the digestive secretions do not remain in the fecal material.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following stimulates gallbladder contraction?

Accepted Answer

A)  CCK 
B)  secretin 
C)  sympathetic stimulation 
D)  CCK and secretin 
E)  CCK and sympathetic stimulation 
A)  CCK 
B)  secretin 
C)  sympathetic stimulation 
D)  CCK and secretin 
E)  CCK and sympathetic stimulation

Question 11

Peptic ulcers

Accepted Answer

A)  are usually caused by excessive neural stimulation 
B)  are usually caused by bacterial infection 
C)  compromise the mucosal barrier and stomach wall 
D)  are usually caused by excessive neural stimulation and by bacterial infection 
E)  are usually caused by bacterial infection and compromise the mucosal barrier and stomach wall 
A)  are usually caused by excessive neural stimulation 
B)  are usually caused by bacterial infection 
C)  compromise the mucosal barrier and stomach wall 
D)  are usually caused by excessive neural stimulation and by bacterial infection 
E)  are usually caused by bacterial infection and compromise the mucosal barrier and stomach wall

Question 12

Which of the following is entirely under nervous control and has no hormonal regulatory component?

Accepted Answer

A)  salivary secretion 
B)  gastric secretion 
C)  pancreatic secretion 
D)  liver secretion 
E)  none of these (all have a hormonal regulatory component) 
A)  salivary secretion 
B)  gastric secretion 
C)  pancreatic secretion 
D)  liver secretion 
E)  none of these (all have a hormonal regulatory component)

Question 13

The enterogastric reflex and enterogastrones inhibit gastric motility but stimulate gastric secretion.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following correctly describes carbohydrate absorption by intestinal cells?

Accepted Answer

A)  The absorbable units of carbohydrate are monosaccharides. 
B)  Fructose is absorbed by facilitated diffusion. 
C)  Glucose is absorbed by Na+ and energy-dependent secondary active transport. 
D)  Carbohydrates are absorbed into the blood. 
E)  All of these. 
A)  The absorbable units of carbohydrate are monosaccharides. 
B)  Fructose is absorbed by facilitated diffusion. 
C)  Glucose is absorbed by Na+ and energy-dependent secondary active transport. 
D)  Carbohydrates are absorbed into the blood. 
E)  All of these.

Question 15

Select the incorrect statement about the pancreas.

Accepted Answer

A)  It has endocrine tissue. 
B)  It has exocrine tissue. 
C)  It secretes an alkaline fluid. 
D)  It secretes pepsinogen. 
E)  It secretes trypsinogen. 
A)  It has endocrine tissue. 
B)  It has exocrine tissue. 
C)  It secretes an alkaline fluid. 
D)  It secretes pepsinogen. 
E)  It secretes trypsinogen.

Question 16

Amino acids and glucose are both absorbed by secondary active transport by the small intestinal epithelial cells.

Accepted Answer

A) True 
 B)False

Question 17

Chymotrypsinogen

Accepted Answer

A)  is activated by enterokinase 
B)  once activated, is involved in protein digestion 
C)  is secreted by the endocrine pancreas 
D)  all of these 
E)  none of these 
A)  is activated by enterokinase 
B)  once activated, is involved in protein digestion 
C)  is secreted by the endocrine pancreas 
D)  all of these 
E)  none of these

Question 18

Mixing movements

Accepted Answer

A)  promote digestion by mixing food with digestive juices 
B)  facilitate absorption by exposing luminal contents to absorptive surfaces 
C)  take place only in the stomach 
D)  promote digestion by mixing food with digestive juices and facilitate absorption by exposing luminal contents to absorptive surfaces 
E)  all of these 
A)  promote digestion by mixing food with digestive juices 
B)  facilitate absorption by exposing luminal contents to absorptive surfaces 
C)  take place only in the stomach 
D)  promote digestion by mixing food with digestive juices and facilitate absorption by exposing luminal contents to absorptive surfaces 
E)  all of these

Question 19

The myenteric plexus is a nerve network located in the submucosa.

Accepted Answer

A) True 
 B)False

Question 20

Which factor below does not slow down gastric activities?

Accepted Answer

A)  enterogastric reflex 
B)  enterogastrones 
C)  secretin 
D)  gastrin 
E)  cholecystokinin 
A)  enterogastric reflex 
B)  enterogastrones 
C)  secretin 
D)  gastrin 
E)  cholecystokinin

Exam 16: A--The Digestive System

Alcohol

After pepsinogen is activated, it

Which tissue layer provides for primary digestive motility?

Protein digestion is initiated by salivary amylase.

Intrinsic factor is necessary for the absorption of vitamin B12.

The major metabolic waste product eliminated in the feces is bilirubin.

Carbohydrates are absorbed as

The function of mixing movements is to promote digestion and facilitate absorption.

Most of the digestive secretions do not remain in the fecal material.

Which of the following stimulates gallbladder contraction?

Peptic ulcers

Which of the following is entirely under nervous control and has no hormonal regulatory component?

The enterogastric reflex and enterogastrones inhibit gastric motility but stimulate gastric secretion.

Which of the following correctly describes carbohydrate absorption by intestinal cells?

Select the incorrect statement about the pancreas.

Amino acids and glucose are both absorbed by secondary active transport by the small intestinal epithelial cells.

Chymotrypsinogen

Mixing movements

The myenteric plexus is a nerve network located in the submucosa.

Which factor below does not slow down gastric activities?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Intrinsic factor is necessary for the absorption of vitamin B₁₂.