Question 1

Which is not a reason the stomach is acidic?

Accepted Answer

A)  Kills microorganisms. 
B)  Emulsification of lipids. 
C)  Denatures proteins. 
D)  Helps break down plant cell walls and connective tissue in meat. 
E)  Activates pepsin. 
A)  Kills microorganisms. 
B)  Emulsification of lipids. 
C)  Denatures proteins. 
D)  Helps break down plant cell walls and connective tissue in meat. 
E)  Activates pepsin.

Question 2

Figure 24-2 The Wall of the Small Intestine
  
Use Figure 24-2 to answer the following questions:
-What type of epithelium covers the structure labeled "6"?

Accepted Answer

A)  simple squamous 
B)  stratified squamous 
C)  simple cuboidal 
D)  simple columnar 
E)  pseudostratified ciliated columnar 
A)  simple squamous 
B)  stratified squamous 
C)  simple cuboidal 
D)  simple columnar 
E)  pseudostratified ciliated columnar

Question 3

Stimulation of gastric stretch receptors causes all of the following except

Accepted Answer

A)  a decrease in myenteric plexus stimulation. 
B)  an increase in histamine release. 
C)  an increase in gastrin secretion. 
D)  an increase in submucosal neural plexus stimulation. 
E)  an increase in acid production. 
A)  a decrease in myenteric plexus stimulation. 
B)  an increase in histamine release. 
C)  an increase in gastrin secretion. 
D)  an increase in submucosal neural plexus stimulation. 
E)  an increase in acid production.

Question 4

Triglycerides, steroids, phospholipids and fat-soluble vitamins that are coated with proteins are called

Accepted Answer

A)  lacteals. 
B)  chylomicrons. 
C)  vesicles. 
D)  micelles. 
E)  bile salts. 
A)  lacteals. 
B)  chylomicrons. 
C)  vesicles. 
D)  micelles. 
E)  bile salts.

Question 5

The part of a tooth that contains blood vessels and nerves is the

Accepted Answer

A)  enamel. 
B)  cement. 
C)  dentin. 
D)  pulp cavity. 
E)  periodontium. 
A)  enamel. 
B)  cement. 
C)  dentin. 
D)  pulp cavity. 
E)  periodontium.

Question 6

During deglutition, which of the following phases is first?

Accepted Answer

A)  buccal 
B)  pharyngeal 
C)  gastric 
D)  esophageal 
E)  enteric 
A)  buccal 
B)  pharyngeal 
C)  gastric 
D)  esophageal 
E)  enteric

Question 7

Powerful peristaltic contractions that occur a few times each day in the colon are called

Accepted Answer

A)  segmentation. 
B)  pendular movements. 
C)  haustral churning. 
D)  defecation. 
E)  mass movements. 
A)  segmentation. 
B)  pendular movements. 
C)  haustral churning. 
D)  defecation. 
E)  mass movements.

Question 8

Which of the following is not a digestive enzyme?

Accepted Answer

A)  amylase 
B)  lipase 
C)  bile 
D)  pepsin 
E)  trypsin 
A)  amylase 
B)  lipase 
C)  bile 
D)  pepsin 
E)  trypsin

Question 9

Hydrochloric acid from the stomach is neutralized in the small intestine by

Accepted Answer

A)  water that was ingested with the food. 
B)  bicarbonate from the pancreas. 
C)  trypsin. 
D)  bile from the liver. 
E)  enzymes from the intestinal crypts. 
A)  water that was ingested with the food. 
B)  bicarbonate from the pancreas. 
C)  trypsin. 
D)  bile from the liver. 
E)  enzymes from the intestinal crypts.

Question 10

Which of the following is true regarding the production of intestinal juice?

Accepted Answer

A)  Most of the fluid is actively transported into the lumen. 
B)  The pancreas is the source for most of the intestinal juice. 
C)  Intestinal juice is produced following activation by motilin. 
D)  Local reflexes and parasympathetic stimulation increase the production of intestinal juice. 
E)  The cephalic phase of gastric secretion produces intestinal juice. 
A)  Most of the fluid is actively transported into the lumen. 
B)  The pancreas is the source for most of the intestinal juice. 
C)  Intestinal juice is produced following activation by motilin. 
D)  Local reflexes and parasympathetic stimulation increase the production of intestinal juice. 
E)  The cephalic phase of gastric secretion produces intestinal juice.

Question 11

An intestinal hormone that stimulates mucin production by the submucosal duodenal glands is

Accepted Answer

A)  secretin. 
B)  cholecystokinin. 
C)  enterocrinin. 
D)  GIP. 
E)  gastrin. 
A)  secretin. 
B)  cholecystokinin. 
C)  enterocrinin. 
D)  GIP. 
E)  gastrin.

Question 12

In response to the hormone cholecystokinin, the pancreas secretes a fluid

Accepted Answer

A)  rich in enzymes. 
B)  rich in bicarbonate. 
C)  rich in bile. 
D)  rich in mucus. 
E)  that contains only amylase. 
A)  rich in enzymes. 
B)  rich in bicarbonate. 
C)  rich in bile. 
D)  rich in mucus. 
E)  that contains only amylase.

Question 13

A drug that blocks the action of the hormone cholecystokinin would affect all of the following except

Accepted Answer

A)  relaxation of the hepatopancreatic sphincter. 
B)  the composition of pancreatic secretions. 
C)  the delivery of bile. 
D)  digestion of lipids and proteins. 
E)  absorption of water in the large intestines. 
A)  relaxation of the hepatopancreatic sphincter. 
B)  the composition of pancreatic secretions. 
C)  the delivery of bile. 
D)  digestion of lipids and proteins. 
E)  absorption of water in the large intestines.

Question 14

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.

Question 15

The root of a tooth is covered by

Accepted Answer

A)  enamel. 
B)  cement. 
C)  dentin. 
D)  pulp. 
E)  the root canal. 
A)  enamel. 
B)  cement. 
C)  dentin. 
D)  pulp. 
E)  the root canal.

Question 16

Which of the following is not found in the large intestines?

Accepted Answer

A)  villi 
B)  intestinal crypts 
C)  intestinal glands 
D)  mucous cells 
E)  simple columnar epithelium 
A)  villi 
B)  intestinal crypts 
C)  intestinal glands 
D)  mucous cells 
E)  simple columnar epithelium

Question 17

Circular folds and intestinal villi

Accepted Answer

A)  increase the surface area of the mucosa of the small intestine. 
B)  carry products of digestion that will not pass through the walls of blood capillaries. 
C)  produce new cells for the mucosa of the small intestine. 
D)  secrete digestive enzymes. 
E)  produce hormones. 
A)  increase the surface area of the mucosa of the small intestine. 
B)  carry products of digestion that will not pass through the walls of blood capillaries. 
C)  produce new cells for the mucosa of the small intestine. 
D)  secrete digestive enzymes. 
E)  produce hormones.

Question 18

Chief cells secrete

Accepted Answer

A)  pepsinogen. 
B)  gastrin. 
C)  mucus. 
D)  hydrochloric acid. 
E)  intrinsic factor. 
A)  pepsinogen. 
B)  gastrin. 
C)  mucus. 
D)  hydrochloric acid. 
E)  intrinsic factor.

Question 19

Functions of the tongue include all of the following except

Accepted Answer

A)  mechanical processing of food. 
B)  manipulation of food. 
C)  sensory analysis of food. 
D)  aiding in speech. 
E)  partitioning the oropharynx from the nasopharynx. 
A)  mechanical processing of food. 
B)  manipulation of food. 
C)  sensory analysis of food. 
D)  aiding in speech. 
E)  partitioning the oropharynx from the nasopharynx.

Question 20

D cells release ________, which inhibits the release of gastrin.

Accepted Answer

A)  inhibin 
B)  ghrelin 
C)  leptin 
D)  somatostatin 
E)  pepsin 
A)  inhibin 
B)  ghrelin 
C)  leptin 
D)  somatostatin 
E)  pepsin

Exam 24: The Digestive System

Which is not a reason the stomach is acidic?

Figure 24-2 The Wall of the Small Intestine Use Figure 24-2 to answer the following questions: -What type of epithelium covers the structure labeled "6"?

Stimulation of gastric stretch receptors causes all of the following except

Triglycerides, steroids, phospholipids and fat-soluble vitamins that are coated with proteins are called

The part of a tooth that contains blood vessels and nerves is the

During deglutition, which of the following phases is first?

Powerful peristaltic contractions that occur a few times each day in the colon are called

Which of the following is not a digestive enzyme?

Hydrochloric acid from the stomach is neutralized in the small intestine by

Which of the following is true regarding the production of intestinal juice?

An intestinal hormone that stimulates mucin production by the submucosal duodenal glands is

In response to the hormone cholecystokinin, the pancreas secretes a fluid

A drug that blocks the action of the hormone cholecystokinin would affect all of the following except

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

The root of a tooth is covered by

Which of the following is not found in the large intestines?

Circular folds and intestinal villi

Chief cells secrete

Functions of the tongue include all of the following except

D cells release ________, which inhibits the release of gastrin.

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous 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, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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