Question 1

Which statement concerning the intrinsic plexuses is INCORRECT?

Accepted Answer

A)  The myenteric plexus is located in the submucosa. 
B)  The plexuses innervate smooth muscle cells and exocrine and endocrine gland cells. 
C)  The plexuses are influenced by extrinsic nerves. 
D)  The plexuses coordinate local digestive tract activity. 
A)  The myenteric plexus is located in the submucosa. 
B)  The plexuses innervate smooth muscle cells and exocrine and endocrine gland cells. 
C)  The plexuses are influenced by extrinsic nerves. 
D)  The plexuses coordinate local digestive tract activity.

Question 2

Which of the following are NOT functions of aqueous NaHCO₃ secreted by the pancreas into the duodenum?

Accepted Answer

A)  neutralization of acidic gastric contents emptied into the duodenum 
B)  prevention of irritation of the duodenal mucosa 
C)  active digestion of fat molecules into fatty acids 
A)  neutralization of acidic gastric contents emptied into the duodenum 
B)  prevention of irritation of the duodenal mucosa 
C)  active digestion of fat molecules into fatty acids

Question 3

MATCHING
Match the control mechanism with the characteristic by using the answer code (options may be used more than once or not at all):
-coordinates activity between different regions of the digestive tract

Accepted Answer

A) autonomous smooth muscle function 
B) extrinsic (autonomic) nerves 
C) hormones 
D) intrinsic nerve plexuses 
A) autonomous smooth muscle function 
B) extrinsic (autonomic) nerves 
C) hormones 
D) intrinsic nerve plexuses

Question 4

Indicate the site at which digestion of each of the three main categories of foodstuff commences and is completed by using the answer code (options may be used more than once or not at all):
-protein digestion is completed

Accepted Answer

A) mouth 
B) stomach 
C) small intestine lumen 
D) intracellularly in the small intestine brush border 
E) colon 
A) mouth 
B) stomach 
C) small intestine lumen 
D) intracellularly in the small intestine brush border 
E) colon

Question 5

What happens after pepsinogen is activated?

Accepted Answer

A)  It autocatalytically activates more pepsinogen. 
B)  It activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred. 
C)  It inhibits the pyloric gland area in a negative-feedback fashion. 
D)  It inhibits the secretion of HCL. 
A)  It autocatalytically activates more pepsinogen. 
B)  It activates the pancreatic proteolytic enzymes in the duodenal lumen after gastric emptying has occurred. 
C)  It inhibits the pyloric gland area in a negative-feedback fashion. 
D)  It inhibits the secretion of HCL.

Question 6

As the gastric pH falls very low,the pyloric gland area is inhibited.

Accepted Answer

A) True 
 B)False

Question 7

Indicate which digestive secretion is being described in each question by writing the appropriate letter using the answer code (options may be used more than once or not at all):
-gastric enzyme that digests protein

Accepted Answer

A) bile salts 
B) pepsin(ogen) 
C) amylase 
D) lipase 
E) trypsin(ogen) 
A) bile salts 
B) pepsin(ogen) 
C) amylase 
D) lipase 
E) trypsin(ogen)

Question 8

Which statement is NOT a function of the liver?

Accepted Answer

A)  metabolic processing of carbohydrates, proteins, and fats 
B)  secretion of proteolytic digestive enzymes 
C)  detoxification and/or degradation of body wastes, hormones, drugs, and foreign compounds 
D)  synthesis of plasma proteins essential to the clotting process 
A)  metabolic processing of carbohydrates, proteins, and fats 
B)  secretion of proteolytic digestive enzymes 
C)  detoxification and/or degradation of body wastes, hormones, drugs, and foreign compounds 
D)  synthesis of plasma proteins essential to the clotting process

Question 9

In general,the parasympathetic nervous system is ____________________ [excitatory or inhibitory] to the digestive tract,whereas the sympathetic nervous system is ____________________ [excitatory or inhibitory].

Accepted Answer

excitatory

Question 10

What is absorbed by receptor mediated endocytosis in the terminal ileum?

Accepted Answer

A)  fatty acids and monoglycerides 
B)  Bile 
C)  vitamin B12 
D)  amino acids 
A)  fatty acids and monoglycerides 
B)  Bile 
C)  vitamin B12 
D)  amino acids

Question 11

If peristalsis in the esophagus is insufficient to carry an especially large bolus of food through the esophagus to the stomach,what happens to dislodge this trapped food?

Accepted Answer

A)  A secondary peristaltic wave is initiated by the swallowing centre. 
B)  A secondary peristaltic wave is initiated by distention of the esophagus, mediated by the intrinsic nerve plexuses. 
C)  The food remains in the esophagus until the swallowing mechanism is voluntarily initiated once again. 
D)  Increased esophageal mucus secretion occurs to lubricate the stuck bolus so that it can slide to the stomach. 
A)  A secondary peristaltic wave is initiated by the swallowing centre. 
B)  A secondary peristaltic wave is initiated by distention of the esophagus, mediated by the intrinsic nerve plexuses. 
C)  The food remains in the esophagus until the swallowing mechanism is voluntarily initiated once again. 
D)  Increased esophageal mucus secretion occurs to lubricate the stuck bolus so that it can slide to the stomach.

Question 12

The contents of the digestive tract are technically outside the body.

Accepted Answer

A) True 
 B)False

Question 13

Which statement concerning cholecystokinin is INCORRECT?

Accepted Answer

A)  It is secreted by the endocrine portion of the pancreas. 
B)  It stimulates pancreatic enzyme secretion. 
C)  It causes contraction of the gallbladder. 
A)  It is secreted by the endocrine portion of the pancreas. 
B)  It stimulates pancreatic enzyme secretion. 
C)  It causes contraction of the gallbladder.

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

Which secretions are increased by chewing?

Accepted Answer

A)  salivary secretion 
B)  gastric secretion 
C)  intestinal hormones 
D)  both salivary and gastric secretions 
A)  salivary secretion 
B)  gastric secretion 
C)  intestinal hormones 
D)  both salivary and gastric secretions

Question 16

Match the hormone with the action by using the answer code:
-causes gallbladder contraction

Accepted Answer

A) gastrin 
B) secretin 
C) CCK 
D) gastric inhibitory peptide 
E) histamine 
A) gastrin 
B) secretin 
C) CCK 
D) gastric inhibitory peptide 
E) histamine

Question 17

About 9,500 ml of fluid is absorbed from the digestive tract daily.What is the ultimate source of most of this fluid?

Accepted Answer

A)  food and fluid ingested during meals 
B)  stored within secretory cells of the digestive tract 
C)  the plasma 
D)  the accessory digestive organs 
A)  food and fluid ingested during meals 
B)  stored within secretory cells of the digestive tract 
C)  the plasma 
D)  the accessory digestive organs

Question 18

The most important function of the stomach is to begin protein digestion.

Accepted Answer

A) True 
 B)False

Question 19

Peristaltic waves occur continuously in the stomach at a rate of three contractions per minute,keeping pace with the BER.

Accepted Answer

A) True 
 B)False

Question 20

What does NOT occur during vomiting?

Accepted Answer

A)  The diaphragm contracts. 
B)  The abdominal muscles contract. 
C)  The stomach contracts. 
D)  Respiration is inhibited. 
A)  The diaphragm contracts. 
B)  The abdominal muscles contract. 
C)  The stomach contracts. 
D)  Respiration is inhibited.

Which statement concerning the intrinsic plexuses is INCORRECT?

Which of the following are NOT functions of aqueous NaHCO₃ secreted by the pancreas into the duodenum?

MATCHING Match the control mechanism with the characteristic by using the answer code (options may be used more than once or not at all): -coordinates activity between different regions of the digestive tract

Indicate the site at which digestion of each of the three main categories of foodstuff commences and is completed by using the answer code (options may be used more than once or not at all): -protein digestion is completed

What happens after pepsinogen is activated?

As the gastric pH falls very low,the pyloric gland area is inhibited.

Indicate which digestive secretion is being described in each question by writing the appropriate letter using the answer code (options may be used more than once or not at all): -gastric enzyme that digests protein

Which statement is NOT a function of the liver?

In general,the parasympathetic nervous system is [excitatory or inhibitory] to the digestive tract,whereas the sympathetic nervous system is [excitatory or inhibitory].

What is absorbed by receptor mediated endocytosis in the terminal ileum?

If peristalsis in the esophagus is insufficient to carry an especially large bolus of food through the esophagus to the stomach,what happens to dislodge this trapped food?

The contents of the digestive tract are technically outside the body.

Which statement concerning cholecystokinin is INCORRECT?

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

Which secretions are increased by chewing?

Match the hormone with the action by using the answer code: -causes gallbladder contraction

About 9,500 ml of fluid is absorbed from the digestive tract daily.What is the ultimate source of most of this fluid?

The most important function of the stomach is to begin protein digestion.

Peristaltic waves occur continuously in the stomach at a rate of three contractions per minute,keeping pace with the BER.

What does NOT occur during vomiting?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

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Exam 14: The Digestive System

Which statement concerning the intrinsic plexuses is INCORRECT?

Which of the following are NOT functions of aqueous NaHCO₃ secreted by the pancreas into the duodenum?

MATCHING Match the control mechanism with the characteristic by using the answer code (options may be used more than once or not at all): -coordinates activity between different regions of the digestive tract

Indicate the site at which digestion of each of the three main categories of foodstuff commences and is completed by using the answer code (options may be used more than once or not at all): -protein digestion is completed

What happens after pepsinogen is activated?

As the gastric pH falls very low,the pyloric gland area is inhibited.

Indicate which digestive secretion is being described in each question by writing the appropriate letter using the answer code (options may be used more than once or not at all): -gastric enzyme that digests protein

Which statement is NOT a function of the liver?

In general,the parasympathetic nervous system is ____________________ [excitatory or inhibitory] to the digestive tract,whereas the sympathetic nervous system is ____________________ [excitatory or inhibitory].

What is absorbed by receptor mediated endocytosis in the terminal ileum?

If peristalsis in the esophagus is insufficient to carry an especially large bolus of food through the esophagus to the stomach,what happens to dislodge this trapped food?

The contents of the digestive tract are technically outside the body.

Which statement concerning cholecystokinin is INCORRECT?

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

Which secretions are increased by chewing?

Match the hormone with the action by using the answer code: -causes gallbladder contraction

About 9,500 ml of fluid is absorbed from the digestive tract daily.What is the ultimate source of most of this fluid?

The most important function of the stomach is to begin protein digestion.

Peristaltic waves occur continuously in the stomach at a rate of three contractions per minute,keeping pace with the BER.

What does NOT occur during vomiting?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

In general,the parasympathetic nervous system is [excitatory or inhibitory] to the digestive tract,whereas the sympathetic nervous system is [excitatory or inhibitory].