Question 1

The type of smooth muscle contraction that is necessary for swallowing is called

Accepted Answer

A) Peristalsis 
B) Mass movement 
C) Segmentation 
D) Distension 
E) Lengthening 
A) Peristalsis 
B) Mass movement 
C) Segmentation 
D) Distension 
E) Lengthening A

Question 2

The primary kind of motility in the small intestine during digestion of a meal is

Accepted Answer

A) Peristalsis 
B) Segmentation 
C) Relaxation of the pyloric sphincter 
D) Migrating motility complex 
E) Mass movement 
A) Peristalsis 
B) Segmentation 
C) Relaxation of the pyloric sphincter 
D) Migrating motility complex 
E) Mass movement B

Question 3

Receptors for digestive reflexes

Accepted Answer

A) Are located in the gastrointestinal tract wall 
B) Include chemoreceptors, osmoreceptors, and mechanoreceptors 
C) May relay information to integrative centers in the CNS or the enteric plexuses 
D) May be endocrine cells 
E) Are all of these choices 
A) Are located in the gastrointestinal tract wall 
B) Include chemoreceptors, osmoreceptors, and mechanoreceptors 
C) May relay information to integrative centers in the CNS or the enteric plexuses 
D) May be endocrine cells 
E) Are all of these choices E

Question 4

In patients lacking exocrine pancreas secretion,fat digestion is normal provided bile is still produced.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following occurs during the cephalic phase of gastrointestinal control?

Accepted Answer

A) Secretion of saliva 
B) Secretion of gastric acid 
C) Secretion of secretin 
D) Both secretion of saliva and secretion of gastric acid occur 
E) All of these things occur 
A) Secretion of saliva 
B) Secretion of gastric acid 
C) Secretion of secretin 
D) Both secretion of saliva and secretion of gastric acid occur 
E) All of these things occur

Question 6

Which of the following statements concerning secretin is correct?

Accepted Answer

A) The most potent stimulus for secretin secretion is the presence of fat in the duodenum 
B) Secretin is the most potent stimulus for pancreatic enzyme secretion 
C) Secretin is the most potent stimulus for pancreatic bicarbonate secretion 
D) Secretin stimulates secretion by the parietal and chief cells 
E) All of the choices are correct 
A) The most potent stimulus for secretin secretion is the presence of fat in the duodenum 
B) Secretin is the most potent stimulus for pancreatic enzyme secretion 
C) Secretin is the most potent stimulus for pancreatic bicarbonate secretion 
D) Secretin stimulates secretion by the parietal and chief cells 
E) All of the choices are correct

Question 7

Bicarbonate is produced by

Accepted Answer

A) Parietal cells of the stomach 
B) Pancreatic duct cells 
C) Kidney tubule epithelial cells 
D) Pancreatic duct cells and kidney tubule epithelial cells 
E) All of the choices are correct 
A) Parietal cells of the stomach 
B) Pancreatic duct cells 
C) Kidney tubule epithelial cells 
D) Pancreatic duct cells and kidney tubule epithelial cells 
E) All of the choices are correct

Question 8

During the cephalic phase of gastric stimulation,all of the following occur except,

Accepted Answer

A) Seeing, smelling, and/or tasting food reflexly increase(s) gastric acid secretion 
B) Parasympathetic stimulation of secretory cells in the gastric mucosa occurs 
C) Gastrin is secreted into the gastric lumen 
D) HCl is secreted into the gastric lumen 
E) Pepsinogen is secreted into the gastric lumen 
A) Seeing, smelling, and/or tasting food reflexly increase(s) gastric acid secretion 
B) Parasympathetic stimulation of secretory cells in the gastric mucosa occurs 
C) Gastrin is secreted into the gastric lumen 
D) HCl is secreted into the gastric lumen 
E) Pepsinogen is secreted into the gastric lumen

Question 9

Neural regulation of digestive processes is accomplished exclusively by the enteric nervous system of the gastrointestinal tract.

Accepted Answer

A) True 
 B)False

Question 10

Cholecystokinin

Accepted Answer

A) Relaxes the sphincter of Oddi 
B) Stimulates pancreatic enzyme secretion 
C) Stimulates gallbladder contraction 
D) Both stimulates pancreatic enzyme secretion and stimulates gallbladder contraction are correct 
E) All of the choices are correct 
A) Relaxes the sphincter of Oddi 
B) Stimulates pancreatic enzyme secretion 
C) Stimulates gallbladder contraction 
D) Both stimulates pancreatic enzyme secretion and stimulates gallbladder contraction are correct 
E) All of the choices are correct

Question 11

Which of the following statements regarding protein digestion and absorption is true?

Accepted Answer

A) Only the stomach and exocrine pancreas produce enzymes that digest protein 
B) The products of protein digestion are carried by blood directly to the liver 
C) Pepsin digests protein in the small intestine 
D) The enzymes that digest protein are secreted in active form 
E) Only free amino acids are absorbed across the intestinal epithelium 
A) Only the stomach and exocrine pancreas produce enzymes that digest protein 
B) The products of protein digestion are carried by blood directly to the liver 
C) Pepsin digests protein in the small intestine 
D) The enzymes that digest protein are secreted in active form 
E) Only free amino acids are absorbed across the intestinal epithelium

Question 12

Which of the following statements is true regarding the emulsification of fats?

Accepted Answer

A) Fat emulsification requires pancreatic lipase 
B) Fat emulsification requires secretion of bile salts and phospholipids by the liver 
C) Fat emulsification results in the formation of small fat droplets 
D) Both fat emulsification requires pancreatic lipase and fat emulsification requires secretion of bile salts and phospholipids by the liver are correct 
E) Both fat emulsification requires secretion of bile salts and phospholipids by the liver and fat emulsification results in the formation of small fat droplets are correct 
A) Fat emulsification requires pancreatic lipase 
B) Fat emulsification requires secretion of bile salts and phospholipids by the liver 
C) Fat emulsification results in the formation of small fat droplets 
D) Both fat emulsification requires pancreatic lipase and fat emulsification requires secretion of bile salts and phospholipids by the liver are correct 
E) Both fat emulsification requires secretion of bile salts and phospholipids by the liver and fat emulsification results in the formation of small fat droplets are correct

Question 13

Following a "meal" that consists solely of carbohydrate (for example,sugar cubes),no amino acids will be absorbed by the small intestine.

Accepted Answer

A) True 
 B)False

Question 14

Constipation

Accepted Answer

A) Is associated with symptoms caused by accumulation of toxins in the stool 
B) Is caused by failure to defecate at least once a day 
C) May be relieved by ingestion of foods with a high proportion of indigestible carbohydrates 
D) Both is associated with symptoms caused by accumulation of toxins in the stool and is caused by failure to defecate at least once a day are correct 
E) Both is caused by failure to defecate at least once a day and may be relieved by ingestion of foods with a high proportion of indigestible carbohydrates are correct 
A) Is associated with symptoms caused by accumulation of toxins in the stool 
B) Is caused by failure to defecate at least once a day 
C) May be relieved by ingestion of foods with a high proportion of indigestible carbohydrates 
D) Both is associated with symptoms caused by accumulation of toxins in the stool and is caused by failure to defecate at least once a day are correct 
E) Both is caused by failure to defecate at least once a day and may be relieved by ingestion of foods with a high proportion of indigestible carbohydrates are correct

Question 15

The parietal cells of the gastric mucosa secrete

Accepted Answer

A) HCl 
B) Pepsinogen 
C) Intrinsic factor 
D) HCl and pepsinogen 
E) HCl and intrinsic factor 
A) HCl 
B) Pepsinogen 
C) Intrinsic factor 
D) HCl and pepsinogen 
E) HCl and intrinsic factor

Question 16

Glucose absorption occurs by active transport.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements about gastrin is true?

Accepted Answer

A) It is a hormone that is secreted by cells in the epithelium of the duodenum 
B) It is an enzyme that is secreted into the lumen of the stomach 
C) It is a hormone that is secreted in response to sympathetic stimulation 
D) It is an enzyme that breaks down proteins 
E) It is a hormone that is secreted in response to the presence of peptides in the stomach 
A) It is a hormone that is secreted by cells in the epithelium of the duodenum 
B) It is an enzyme that is secreted into the lumen of the stomach 
C) It is a hormone that is secreted in response to sympathetic stimulation 
D) It is an enzyme that breaks down proteins 
E) It is a hormone that is secreted in response to the presence of peptides in the stomach

Question 18

Regarding the three phases of gastrointestinal control:

Accepted Answer

A) They refer to the places in the GI tract where digestion or absorption is occurring 
B) They refer to the locations of receptors for stimuli that trigger hormonal or neural control mechanisms for GI processes 
C) The presence of acid in the small intestine is one stimulus for the intestinal phase of GI control 
D) Both they refer to the places in the GI tract where digestion or absorption is occurring and the presence of acid in the small intestine is one stimulus for the intestinal phase of GI control are correct 
E) Both they refer to the locations of receptors for stimuli that trigger hormonal or neural control mechanisms for GI processes and the presence of acid in the small intestine is one stimulus for the intestinal phase of GI control are correct 
A) They refer to the places in the GI tract where digestion or absorption is occurring 
B) They refer to the locations of receptors for stimuli that trigger hormonal or neural control mechanisms for GI processes 
C) The presence of acid in the small intestine is one stimulus for the intestinal phase of GI control 
D) Both they refer to the places in the GI tract where digestion or absorption is occurring and the presence of acid in the small intestine is one stimulus for the intestinal phase of GI control are correct 
E) Both they refer to the locations of receptors for stimuli that trigger hormonal or neural control mechanisms for GI processes and the presence of acid in the small intestine is one stimulus for the intestinal phase of GI control are correct

Question 19

Which of the following statements about the transport of the absorbed products of fat digestion is true?

Accepted Answer

A) Free fatty acids and monoglycerides are transported to the liver via the hepatic portal vein 
B) Products of fat digestion first go to the lymph system, and then to the veins leading to the heart 
C) Triacylglycerols are transported to the liver via the hepatic portal vein to be processed 
D) Free fatty acids and monoglycerides are transported through the lymph in lipoproteins called chylomicrons 
E) None of the choices are correct 
A) Free fatty acids and monoglycerides are transported to the liver via the hepatic portal vein 
B) Products of fat digestion first go to the lymph system, and then to the veins leading to the heart 
C) Triacylglycerols are transported to the liver via the hepatic portal vein to be processed 
D) Free fatty acids and monoglycerides are transported through the lymph in lipoproteins called chylomicrons 
E) None of the choices are correct

Question 20

The amount of HCl secreted by the stomach during the digestion of a meal is dependent upon the type of food ingested.

Accepted Answer

A) True 
 B)False

The type of smooth muscle contraction that is necessary for swallowing is called

The primary kind of motility in the small intestine during digestion of a meal is

Receptors for digestive reflexes

In patients lacking exocrine pancreas secretion,fat digestion is normal provided bile is still produced.

Which of the following occurs during the cephalic phase of gastrointestinal control?

Which of the following statements concerning secretin is correct?

Bicarbonate is produced by

During the cephalic phase of gastric stimulation,all of the following occur except,

Neural regulation of digestive processes is accomplished exclusively by the enteric nervous system of the gastrointestinal tract.

Cholecystokinin

Which of the following statements regarding protein digestion and absorption is true?

Which of the following statements is true regarding the emulsification of fats?

Following a "meal" that consists solely of carbohydrate (for example,sugar cubes),no amino acids will be absorbed by the small intestine.

Constipation

The parietal cells of the gastric mucosa secrete

Glucose absorption occurs by active transport.

Which of the following statements about gastrin is true?

Regarding the three phases of gastrointestinal control:

Which of the following statements about the transport of the absorbed products of fat digestion is true?

The amount of HCl secreted by the stomach during the digestion of a meal is dependent upon the type of food ingested.

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

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Exam 15: The Digestion and Absorption of Food

The type of smooth muscle contraction that is necessary for swallowing is called

The primary kind of motility in the small intestine during digestion of a meal is

Receptors for digestive reflexes

In patients lacking exocrine pancreas secretion,fat digestion is normal provided bile is still produced.

Which of the following occurs during the cephalic phase of gastrointestinal control?

Which of the following statements concerning secretin is correct?

Bicarbonate is produced by

During the cephalic phase of gastric stimulation,all of the following occur except,

Neural regulation of digestive processes is accomplished exclusively by the enteric nervous system of the gastrointestinal tract.

Cholecystokinin

Which of the following statements regarding protein digestion and absorption is true?

Which of the following statements is true regarding the emulsification of fats?

Following a "meal" that consists solely of carbohydrate (for example,sugar cubes),no amino acids will be absorbed by the small intestine.

Constipation

The parietal cells of the gastric mucosa secrete

Glucose absorption occurs by active transport.

Which of the following statements about gastrin is true?

Regarding the three phases of gastrointestinal control:

Which of the following statements about the transport of the absorbed products of fat digestion is true?

The amount of HCl secreted by the stomach during the digestion of a meal is dependent upon the type of food ingested.

Homeostasis: a Framework for Human Physiology

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters