Question 1

With regard to gastric motility,

Accepted Answer

A) The basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present 
B) Gastric smooth muscle contracts three times a minute regardless of whether or not food is present 
C) The force of contraction is increased by gastrin and inhibited by enterogastrones 
D) Both the basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present and gastric smooth muscle contracts three times a minute regardless of whether or not food is present are correct 
E) Both the basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present and the force of contraction is increased by gastrin and inhibited by enterogastrones are correct 
A) The basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present 
B) Gastric smooth muscle contracts three times a minute regardless of whether or not food is present 
C) The force of contraction is increased by gastrin and inhibited by enterogastrones 
D) Both the basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present and gastric smooth muscle contracts three times a minute regardless of whether or not food is present are correct 
E) Both the basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present and the force of contraction is increased by gastrin and inhibited by enterogastrones are correct

Question 2

Peristaltic contractions occur in

Accepted Answer

A) The small intestine 
B) The large intestine 
C) The stomach 
D) The esophagus 
E) All of the choices are correct 
A) The small intestine 
B) The large intestine 
C) The stomach 
D) The esophagus 
E) All of the choices are correct

Question 3

The function of micelles is to store the products of lipid digestion in water-soluble form.

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) Peristalsis 
B) Segmentation 
C) Relaxation of the pyloric sphincter 
D) Mass movement 
E) Regurgitation 
A) Peristalsis 
B) Segmentation 
C) Relaxation of the pyloric sphincter 
D) Mass movement 
E) Regurgitation

Question 5

The lumen of the gastrointestinal tract is continuous with the external environment.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following statements about neural control of digestion is not true?

Accepted Answer

A) Parasympathetic stimulation is excitatory to digestion 
B) Sympathetic stimulation is generally inhibitory to digestion 
C) Local nerve networks (nerve plexuses) stimulate digestive functions 
D) Under normal circumstances, nerve plexuses regulate digestion without input from the autonomic nervous system 
E) None of the choices are correct 
A) Parasympathetic stimulation is excitatory to digestion 
B) Sympathetic stimulation is generally inhibitory to digestion 
C) Local nerve networks (nerve plexuses) stimulate digestive functions 
D) Under normal circumstances, nerve plexuses regulate digestion without input from the autonomic nervous system 
E) None of the choices are correct

Question 7

Which of the following statements about pancreatic enzymes is not correct?

Accepted Answer

A) Trypsinogen is secreted in an inactive form 
B) Pancreatic amylase digests carbohydrates 
C) Pancreatic lipase digests fats 
D) Except for trypsinogen, other proteolytic enzymes are secreted in active form 
E) Trypsinogen is activated by enterokinase 
A) Trypsinogen is secreted in an inactive form 
B) Pancreatic amylase digests carbohydrates 
C) Pancreatic lipase digests fats 
D) Except for trypsinogen, other proteolytic enzymes are secreted in active form 
E) Trypsinogen is activated by enterokinase

Question 8

The functions of the stomach include

Accepted Answer

A) The complete digestion of protein 
B) Dissolving all the food that enters it 
C) Killing bacteria 
D) Storing partially digested food 
E) Killing bacteria and storing partially digested food 
A) The complete digestion of protein 
B) Dissolving all the food that enters it 
C) Killing bacteria 
D) Storing partially digested food 
E) Killing bacteria and storing partially digested food

Question 9

Any agent that interferes with water absorption or that causes water secretion into the gastrointestinal tract can cause diarrhea.

Accepted Answer

A) True 
 B)False

Question 10

Lactase enzyme

Accepted Answer

A) Is involved directly in the digestion of proteins 
B) Is necessary for the breakdown of milk fats 
C) Is embedded in the luminal plasma membranes of intestinal epithelial cells 
D) Promotes the formation of and storage of bile by the gallbladder 
E) Is overproduced and released by secretory cells in the small intestine in the condition known as lactose intolerance 
A) Is involved directly in the digestion of proteins 
B) Is necessary for the breakdown of milk fats 
C) Is embedded in the luminal plasma membranes of intestinal epithelial cells 
D) Promotes the formation of and storage of bile by the gallbladder 
E) Is overproduced and released by secretory cells in the small intestine in the condition known as lactose intolerance

Question 11

The exact causes of inflammatory bowel diseases continue to be explored,but it is relatively clear that

Accepted Answer

A) The condition is quite common among people of all ages and subgroups within the population 
B) Inflammatory bowel disease is likely to be passed on through genetic inheritance 
C) Individuals suffering from its effects are largely experiencing the consequences of the complete failure of normal immune mechanisms in the gastrointestinal tract 
D) It can be easily diagnosed since its symptoms are always very specific and the affected areas are always limited to a very focused area within the small intestine 
E) By careful examination of one's diet is relatively easy to recommend the elimination of certain foods and the addition of others to provide immediate relief without the need to administer specific drug therapy 
A) The condition is quite common among people of all ages and subgroups within the population 
B) Inflammatory bowel disease is likely to be passed on through genetic inheritance 
C) Individuals suffering from its effects are largely experiencing the consequences of the complete failure of normal immune mechanisms in the gastrointestinal tract 
D) It can be easily diagnosed since its symptoms are always very specific and the affected areas are always limited to a very focused area within the small intestine 
E) By careful examination of one's diet is relatively easy to recommend the elimination of certain foods and the addition of others to provide immediate relief without the need to administer specific drug therapy

Question 12

Lipase

Accepted Answer

A) Catalyzes the breakdown of triacylglycerol to glycerol and three fatty acids 
B) Emulsifies lipids 
C) Is secreted by the endocrine pancreas 
D) Both catalyzes the breakdown of triacylglycerol to glycerol and three fatty acids and emulsifies lipids are correct 
E) None of the choices are correct 
A) Catalyzes the breakdown of triacylglycerol to glycerol and three fatty acids 
B) Emulsifies lipids 
C) Is secreted by the endocrine pancreas 
D) Both catalyzes the breakdown of triacylglycerol to glycerol and three fatty acids and emulsifies lipids are correct 
E) None of the choices are correct

Question 13

Which of the following is not true about gallstones? Gallstones

Accepted Answer

A) Are crystallized bile salts 
B) May cause pain 
C) May cause impaired fat digestion 
D) May cause general nutritional deficiencies 
E) May cause jaundice 
A) Are crystallized bile salts 
B) May cause pain 
C) May cause impaired fat digestion 
D) May cause general nutritional deficiencies 
E) May cause jaundice

Question 14

Regarding endocrine regulation of gastrointestinal processes,

Accepted Answer

A) The hormone secreted by the stomach is secretin 
B) CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine 
C) Gastrin secretion is controlled in part by parasympathetic nerves 
D) Both the hormone secreted by the stomach is secretin and CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine are correct 
E) Both CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine and gastrin secretion is controlled in part by parasympathetic nerves are correct 
A) The hormone secreted by the stomach is secretin 
B) CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine 
C) Gastrin secretion is controlled in part by parasympathetic nerves 
D) Both the hormone secreted by the stomach is secretin and CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine are correct 
E) Both CCK is the primary efferent pathway for a reflex arc controlling the levels of acid in the small intestine and gastrin secretion is controlled in part by parasympathetic nerves are correct

Question 15

Removal of the stomach would interfere with absorption of vitamin B12.

Accepted Answer

A) True 
 B)False

Question 16

Short chains of amino acids and some intact proteins are absorbed from the small intestine.

Accepted Answer

A) True 
 B)False

Question 17

Lactose intolerance

Accepted Answer

A) Is an inability to digest milk sugar 
B) Is most common in very young children 
C) Can cause painful bloating and diarrhea 
D) Both is an inability to digest milk sugar and is most common in very young children are correct 
E) Both is an inability to digest milk sugar and can cause painful bloating and diarrhea are correct 
A) Is an inability to digest milk sugar 
B) Is most common in very young children 
C) Can cause painful bloating and diarrhea 
D) Both is an inability to digest milk sugar and is most common in very young children are correct 
E) Both is an inability to digest milk sugar and can cause painful bloating and diarrhea are correct

Question 18

Bile pigments

Accepted Answer

A) Are important for fat digestion 
B) Are formed from catabolism of the globin part of hemoglobin 
C) Impart color to the bile, feces, and urine 
D) Both are important for fat digestion and are formed from catabolism of the globin part of hemoglobin are correct 
E) Both are formed from catabolism of the globin part of hemoglobin and impart color to the bile, feces, and urine are correct 
A) Are important for fat digestion 
B) Are formed from catabolism of the globin part of hemoglobin 
C) Impart color to the bile, feces, and urine 
D) Both are important for fat digestion and are formed from catabolism of the globin part of hemoglobin are correct 
E) Both are formed from catabolism of the globin part of hemoglobin and impart color to the bile, feces, and urine are correct

Question 19

The gastroileal reflex coordinates the emptying of chyme from the ileum into the colon with the emptying of chyme from the stomach into the duodenum.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) Carbohydrate digestion begins in the stomach 
B) Lactose intolerance results from amylase insufficiency 
C) Digestible polysaccharides are broken down to maltose and then to glucose 
D) Sucrose is absorbed by active transport across the intestinal epithelium 
E) All of the choices are true 
A) Carbohydrate digestion begins in the stomach 
B) Lactose intolerance results from amylase insufficiency 
C) Digestible polysaccharides are broken down to maltose and then to glucose 
D) Sucrose is absorbed by active transport across the intestinal epithelium 
E) All of the choices are true

With regard to gastric motility,

Peristaltic contractions occur in

The function of micelles is to store the products of lipid digestion in water-soluble form.

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

The lumen of the gastrointestinal tract is continuous with the external environment.

Which of the following statements about neural control of digestion is not true?

Which of the following statements about pancreatic enzymes is not correct?

The functions of the stomach include

Any agent that interferes with water absorption or that causes water secretion into the gastrointestinal tract can cause diarrhea.

Lactase enzyme

The exact causes of inflammatory bowel diseases continue to be explored,but it is relatively clear that

Lipase

Which of the following is not true about gallstones? Gallstones

Regarding endocrine regulation of gastrointestinal processes,

Removal of the stomach would interfere with absorption of vitamin B12.

Short chains of amino acids and some intact proteins are absorbed from the small intestine.

Lactose intolerance

Bile pigments

The gastroileal reflex coordinates the emptying of chyme from the ileum into the colon with the emptying of chyme from the stomach into the duodenum.

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

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

With regard to gastric motility,

Peristaltic contractions occur in

The function of micelles is to store the products of lipid digestion in water-soluble form.

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

The lumen of the gastrointestinal tract is continuous with the external environment.

Which of the following statements about neural control of digestion is not true?

Which of the following statements about pancreatic enzymes is not correct?

The functions of the stomach include

Any agent that interferes with water absorption or that causes water secretion into the gastrointestinal tract can cause diarrhea.

Lactase enzyme

The exact causes of inflammatory bowel diseases continue to be explored,but it is relatively clear that

Lipase

Which of the following is not true about gallstones? Gallstones

Regarding endocrine regulation of gastrointestinal processes,

Removal of the stomach would interfere with absorption of vitamin B12.

Short chains of amino acids and some intact proteins are absorbed from the small intestine.

Lactose intolerance

Bile pigments

The gastroileal reflex coordinates the emptying of chyme from the ileum into the colon with the emptying of chyme from the stomach into the duodenum.

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

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