Question 1

The double-layer sheets of serous membrane that support the viscera are called

Accepted Answer

A) peritoneal sheets. 
B) mesenteries. 
C) ascites. 
D) the diaphragm. 
E) the dorsal and ventral frenulums. 
A) peritoneal sheets. 
B) mesenteries. 
C) ascites. 
D) the diaphragm. 
E) the dorsal and ventral frenulums.

Question 2

The villi are most developed in the

Accepted Answer

A) stomach. 
B) duodenum. 
C) jejunum. 
D) gallbladder. 
E) cecum. 
A) stomach. 
B) duodenum. 
C) jejunum. 
D) gallbladder. 
E) cecum.

Question 3

Submucosal glands that secrete mucus are characteristic of the

Accepted Answer

A) duodenum. 
B) jejunum. 
C) ileum. 
D) pancreas. 
E) liver. 
A) duodenum. 
B) jejunum. 
C) ileum. 
D) pancreas. 
E) liver.

Question 4

Products of fat digestion are transported initially by

Accepted Answer

A) capillaries. 
B) veins. 
C) lymphatic vessels. 
D) the interstitial fluid. 
E) the arterioles. 
A) capillaries. 
B) veins. 
C) lymphatic vessels. 
D) the interstitial fluid. 
E) the arterioles.

Question 5

Identify the incorrect pairing.

Accepted Answer

A) gallbladder; stores bile 
B) esophagus; transports material to stomach 
C) pancreas; secretes amylases 
D) liver; produces intrinsic factor 
E) stomach; has an alkaline lining 
A) gallbladder; stores bile 
B) esophagus; transports material to stomach 
C) pancreas; secretes amylases 
D) liver; produces intrinsic factor 
E) stomach; has an alkaline lining

Question 6

In the large intestine the wall has three strips of longitudinal muscle called the

Accepted Answer

A) muscularis mucosa. 
B) muscularis interna. 
C) muscularis externa. 
D) taenia coli. 
E) haustral bands. 
A) muscularis mucosa. 
B) muscularis interna. 
C) muscularis externa. 
D) taenia coli. 
E) haustral bands.

Question 7

Absorption of glucose from the gut lumen depends on

Accepted Answer

A) the sodium-potassium pump in the basolateral membrane of the epithelial cell. 
B) cotransporter proteins in the apical membrane of the epithelial cell. 
C) higher sodium ion concentration in the lumen than in the epithelial cell. 
D) sodium-linked cotransport. 
E) All of the answers are correct. 
A) the sodium-potassium pump in the basolateral membrane of the epithelial cell. 
B) cotransporter proteins in the apical membrane of the epithelial cell. 
C) higher sodium ion concentration in the lumen than in the epithelial cell. 
D) sodium-linked cotransport. 
E) All of the answers are correct.

Question 8

The enzyme pepsin digests

Accepted Answer

A) carbohydrates. 
B) proteins. 
C) lipids. 
D) nucleic acids. 
E) vitamins. 
A) carbohydrates. 
B) proteins. 
C) lipids. 
D) nucleic acids. 
E) vitamins.

Question 9

Figure 24-1 The Stomach (dissected)
Use Figure 24-1 to answer the following questions:
-What is the function of the structure labeled "6"?

Accepted Answer

A) strains materials entering the stomach 
B) regulates gastric emptying 
C) mixes stomach juice into food 
D) controls contraction of stomach muscles 
E) prevents food from entering the esophagus 
A) strains materials entering the stomach 
B) regulates gastric emptying 
C) mixes stomach juice into food 
D) controls contraction of stomach muscles 
E) prevents food from entering the esophagus

Question 10

Put the following steps of stomach acid production in the correct order starting with the reaction that requires an enzyme.
1)H₂CO₃ dissociates.
2)Chloride ion combines with H+ in the gastric lumen.
3)Water and CO2 combine to form carbonic acid.
4)H+ and bicarbonate ion are transported into the gastric lumen.
5)Cl- diffuses into the gastric lumen.

Accepted Answer

A) 3,1,2,5,4 
B) 1,3,5,2,4 
C) 4,5,3,1,2 
D) 4,5,1,2,3 
E) 3,1,4,5,2 
A) 3,1,2,5,4 
B) 1,3,5,2,4 
C) 4,5,3,1,2 
D) 4,5,1,2,3 
E) 3,1,4,5,2

Question 11

The ________ duct is formed by the union of the cystic duct and the common hepatic duct.

Accepted Answer

A) pancreatic 
B) hepatopancreatic 
C) gastric 
D) common bile 
E) duodenal 
A) pancreatic 
B) hepatopancreatic 
C) gastric 
D) common bile 
E) duodenal

Question 12

The hormone that stimulates secretion and contraction by the stomach is

Accepted Answer

A) gastrin. 
B) enteropeptidase. 
C) secretin. 
D) cholecystokinin. 
E) CCK. 
A) gastrin. 
B) enteropeptidase. 
C) secretin. 
D) cholecystokinin. 
E) CCK.

Question 13

The activities of the digestive system are regulated by

Accepted Answer

A) hormones. 
B) parasympathetic and sympathetic neurons. 
C) the contents of the digestive tract. 
D) intrinsic nerve plexuses. 
E) All of the answers are correct. 
A) hormones. 
B) parasympathetic and sympathetic neurons. 
C) the contents of the digestive tract. 
D) intrinsic nerve plexuses. 
E) All of the answers are correct.

Question 14

Match the gastric phase on the left (1-3)with the correct description on the right (4-6):
1)intestinal phase 4.prepares stomach for arrival of food
2)gastric phase 5.stomach empties and decreases secretions
3)cephalic phase 6.stomach secretes juice and mixes food into chyme

Accepted Answer

A) 1 and 4; 2 and 5; 3 and 6 
B) 1 and 6; 2 and 4; 3 and 5 
C) 1 and 5; 2 and 4; 3 and 6 
D) 1 and 6; 2 and 5; 3 and 4 
E) 1 and 5; 2 and 6; 3 and 4 
A) 1 and 4; 2 and 5; 3 and 6 
B) 1 and 6; 2 and 4; 3 and 5 
C) 1 and 5; 2 and 4; 3 and 6 
D) 1 and 6; 2 and 5; 3 and 4 
E) 1 and 5; 2 and 6; 3 and 4

Question 15

The term "alkaline tide" implies that the pH of the blood in gastric veins is

Accepted Answer

A) greater during digestion of a large meal than following a 24-hour fast. 
B) greater following a 24-hour fast than during digestion of a large meal. 
C) constant because of buffering. 
D) None of the answers are correct. 
A) greater during digestion of a large meal than following a 24-hour fast. 
B) greater following a 24-hour fast than during digestion of a large meal. 
C) constant because of buffering. 
D) None of the answers are correct.

Question 16

Sensory nerve cells,parasympathetic ganglia,and sympathetic postganglionic fibers can be found in the

Accepted Answer

A) mucosa. 
B) serosa. 
C) adventitia. 
D) submucosal plexus. 
E) lamina propria. 
A) mucosa. 
B) serosa. 
C) adventitia. 
D) submucosal plexus. 
E) lamina propria.

Question 17

A stratified squamous epithelial lining can be found in all of the following except in the

Accepted Answer

A) anal canal. 
B) esophagus. 
C) stomach. 
D) oropharynx. 
E) oral cavity. 
A) anal canal. 
B) esophagus. 
C) stomach. 
D) oropharynx. 
E) oral cavity.

Question 18

The serous membrane that lines the peritoneal cavity

Accepted Answer

A) secretes peritoneal fluid. 
B) decreases friction. 
C) lubricates the cavity. 
D) prevents irritation. 
E) All of the answers are correct. 
A) secretes peritoneal fluid. 
B) decreases friction. 
C) lubricates the cavity. 
D) prevents irritation. 
E) All of the answers are correct.

Question 19

Match the proenzyme on the left (1-3)with the correct enzyme activator on the right (4-6)
1)pepsinogen 4.enterokinase
2)trypsinogen 5.hydrochloric acid
3)procarboxypeptidase 6.trypsin

Accepted Answer

A) 1 and 6; 2 and 5; 3 and 4 
B) 1 and 4; 2 and 5; 3 and 6 
C) 1 and 4; 2 and 6; 3 and 5 
D) 1 and 5; 2 and 6; 3 and 4 
E) 1 and 5; 2 and 4; 3 and 6 
A) 1 and 6; 2 and 5; 3 and 4 
B) 1 and 4; 2 and 5; 3 and 6 
C) 1 and 4; 2 and 6; 3 and 5 
D) 1 and 5; 2 and 6; 3 and 4 
E) 1 and 5; 2 and 4; 3 and 6

Question 20

A feature of the digestive tract wall that increases surface area available for absorption is the

Accepted Answer

A) transitional cells. 
B) circular folds. 
C) elastic cells. 
D) rugae. 
E) muscularis mucosa. 
A) transitional cells. 
B) circular folds. 
C) elastic cells. 
D) rugae. 
E) muscularis mucosa.

Exam 24: The Digestive System

The double-layer sheets of serous membrane that support the viscera are called

The villi are most developed in the

Submucosal glands that secrete mucus are characteristic of the

Products of fat digestion are transported initially by

Identify the incorrect pairing.

In the large intestine the wall has three strips of longitudinal muscle called the

Absorption of glucose from the gut lumen depends on

The enzyme pepsin digests

Figure 24-1 The Stomach (dissected) Use Figure 24-1 to answer the following questions: -What is the function of the structure labeled "6"?

The ________ duct is formed by the union of the cystic duct and the common hepatic duct.

The hormone that stimulates secretion and contraction by the stomach is

The activities of the digestive system are regulated by

Match the gastric phase on the left (1-3)with the correct description on the right (4-6): 1)intestinal phase 4.prepares stomach for arrival of food 2)gastric phase 5.stomach empties and decreases secretions 3)cephalic phase 6.stomach secretes juice and mixes food into chyme

The term "alkaline tide" implies that the pH of the blood in gastric veins is

Sensory nerve cells,parasympathetic ganglia,and sympathetic postganglionic fibers can be found in the

A stratified squamous epithelial lining can be found in all of the following except in the

The serous membrane that lines the peritoneal cavity

Match the proenzyme on the left (1-3)with the correct enzyme activator on the right (4-6) 1)pepsinogen 4.enterokinase 2)trypsinogen 5.hydrochloric acid 3)procarboxypeptidase 6.trypsin

A feature of the digestive tract wall that increases surface area available for absorption is the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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