Question 1

Which statement is incorrect?

Accepted Answer

A)  The myenteric plexus is located in the submucosa. 
B)  The intrinsic plexuses innervate smooth muscle cells and exocrine and endocrine glands. 
C)  The plexuses are influenced by extrinsic nerves. 
D)  The plexuses coordinate local digestive tract activity. 
E)  There are two major networks of nerve fibers forming the plexuses of the gut. 
A)  The myenteric plexus is located in the submucosa. 
B)  The intrinsic plexuses innervate smooth muscle cells and exocrine and endocrine glands. 
C)  The plexuses are influenced by extrinsic nerves. 
D)  The plexuses coordinate local digestive tract activity. 
E)  There are two major networks of nerve fibers forming the plexuses of the gut.

Question 2

Proteins are primarily digested to and absorbed as

Accepted Answer

A)  amino acids 
B)  polypeptides 
C)  fatty acids and glycerol 
D)  monosaccharides 
E)  vitamins 
A)  amino acids 
B)  polypeptides 
C)  fatty acids and glycerol 
D)  monosaccharides 
E)  vitamins

Question 3

Which statement is correct?

Accepted Answer

A)  The most potent stimulus for secretin secretion is the presence of fat in the duodenum. 
B)  Secretin stimulates pancreatic enzyme secretion. 
C)  Secretin stimulates the secretion of bicarbonate. 
D)  Secretin stimulates the acinar cells. 
E)  None of these. 
A)  The most potent stimulus for secretin secretion is the presence of fat in the duodenum. 
B)  Secretin stimulates pancreatic enzyme secretion. 
C)  Secretin stimulates the secretion of bicarbonate. 
D)  Secretin stimulates the acinar cells. 
E)  None of these.

Question 4

The rate of gastric emptying depends entirely on the volume and fluidity of gastric contents.

Accepted Answer

A) True 
 B)False

Question 5

The enterogastric reflex promotes gastric emptying.

Accepted Answer

A) True 
 B)False

Question 6

All the pancreatic enzymes are secreted in inactive form.

Accepted Answer

A) True 
 B)False

Question 7

Complete each of the following statments.
The three gastrointestinal hormones that function as enterogastrones are ____________________, ____________________, and ____________________.

Accepted Answer

secretin, cholecysto

Question 8

Which of the following is not secreted into the duodenal lumen?

Accepted Answer

A)  aminopeptidase 
B)  jipase 
C)  trypsinogen 
D)  procarboxypeptidase 
E)  amylase 
A)  aminopeptidase 
B)  jipase 
C)  trypsinogen 
D)  procarboxypeptidase 
E)  amylase

Question 9

Salivary amylase and the pancreatic enzymes are inactivated by acid.

Accepted Answer

A) True 
 B)False

Question 10

Complete each of the following statments.
The primary mixing and propulsive motility of the small intestine is ____________________.

Accepted Answer

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

Question 11

During the cephalic phase of gastric secretion:

Accepted Answer

A)  Thinking about, seeing, and smelling food reflexively increases gastric secretion. 
B)  Vagal stimulation of the gastric glands occurs. 
C)  Gastrin is released. 
D)  Chewing food reflexively increases gastric secretion. 
E)  All of these. 
A)  Thinking about, seeing, and smelling food reflexively increases gastric secretion. 
B)  Vagal stimulation of the gastric glands occurs. 
C)  Gastrin is released. 
D)  Chewing food reflexively increases gastric secretion. 
E)  All of these.

Question 12

After the food has been chewed and mixed with salivary secretion, it is referred to as chyme.

Accepted Answer

A) True 
 B)False

Question 13

Chymotrypsinogen is activated by enterokinase.

Accepted Answer

A) True 
 B)False

Question 14

The outer muscle layer of the digestive tract consists of circular smooth muscle.

Accepted Answer

A) True 
 B)False

Question 15

Upon arrival of a new meal in the stomach, the gastrocolic reflex pushes the colonic contents into the rectum, triggering the defecation reflex to eliminate the remains of a preceding meal.

Accepted Answer

A) True 
 B)False

Question 16

The pharyngoesophageal sphincter is normally closed to prevent

Accepted Answer

A)  air from entering the esophagus during breathing 
B)  gastric contents from refluxing back into the esophagus 
C)  vomiting 
D)  esophageal secretions from leaking into the stomach 
E)  food from entering the pharynx 
A)  air from entering the esophagus during breathing 
B)  gastric contents from refluxing back into the esophagus 
C)  vomiting 
D)  esophageal secretions from leaking into the stomach 
E)  food from entering the pharynx

Question 17

Glucagon is produced by the liver.

Accepted Answer

A) True 
 B)False

Question 18

Glycogen is made and stored in the liver.

Accepted Answer

A) True 
 B)False

Question 19

Digestive enzymes produced by the small intestine are not secreted into the lumen.

Accepted Answer

A) True 
 B)False

Question 20

Chylomicrons are aggregates of bile salts, monoglycerides, and free fatty acids.

Accepted Answer

A) True 
 B)False

Exam 16: A--The Digestive System

Which statement is incorrect?

Proteins are primarily digested to and absorbed as

Which statement is correct?

The rate of gastric emptying depends entirely on the volume and fluidity of gastric contents.

The enterogastric reflex promotes gastric emptying.

All the pancreatic enzymes are secreted in inactive form.

Complete each of the following statments. The three gastrointestinal hormones that function as enterogastrones are ____________________, ____________________, and ____________________.

Which of the following is not secreted into the duodenal lumen?

Salivary amylase and the pancreatic enzymes are inactivated by acid.

Complete each of the following statments. The primary mixing and propulsive motility of the small intestine is ____________________.

During the cephalic phase of gastric secretion:

After the food has been chewed and mixed with salivary secretion, it is referred to as chyme.

Chymotrypsinogen is activated by enterokinase.

The outer muscle layer of the digestive tract consists of circular smooth muscle.

Upon arrival of a new meal in the stomach, the gastrocolic reflex pushes the colonic contents into the rectum, triggering the defecation reflex to eliminate the remains of a preceding meal.

The pharyngoesophageal sphincter is normally closed to prevent

Glucagon is produced by the liver.

Glycogen is made and stored in the liver.

Digestive enzymes produced by the small intestine are not secreted into the lumen.

Chylomicrons are aggregates of bile salts, monoglycerides, and free fatty acids.

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

Complete each of the following statments. The three gastrointestinal hormones that function as enterogastrones are , , and .