Question 1

Immunity that results from exposure to an antigen in the environment is called_______ immunity.

Accepted Answer

A)  naturally acquired active 
B)  innate 
C)  auto 
D)  natural passive 
E)  passive 
A)  naturally acquired active 
B)  innate 
C)  auto 
D)  natural passive 
E)  passive

Question 2

The role of antigen- presenting cells in immunity is to

Accepted Answer

A)  process antigens. 
B)  display antigen fragments. 
C)  produce antibodies. 
D)  activate T cells. 
E)  A, B, and C 
A)  process antigens. 
B)  display antigen fragments. 
C)  produce antibodies. 
D)  activate T cells. 
E)  A, B, and C

Question 3

Each of the following is a physical barrier to infection, except

Accepted Answer

A)  secretions. 
B)  body hair. 
C)  epithelium. 
D)  complement. 
E)  basement membranes. 
A)  secretions. 
B)  body hair. 
C)  epithelium. 
D)  complement. 
E)  basement membranes.

Question 4

All of the following are true of the secondary response of humoral immunity, except that it

Accepted Answer

A)  results in much quicker rise in antibody titers. 
B)  produces more effective antibodies. 
C)  weakens quickly because memory B cells only survive for a year or two. 
D)  results in much higher antibody titers than in the primary response. 
E)  depends on memory B cells. 
A)  results in much quicker rise in antibody titers. 
B)  produces more effective antibodies. 
C)  weakens quickly because memory B cells only survive for a year or two. 
D)  results in much higher antibody titers than in the primary response. 
E)  depends on memory B cells.

Question 5

The thoracic duct originates from an expanded chamber called the________

Accepted Answer

The answer of The thoracic duct originates from an expanded...

Question 6

The cells responsible for the production of circulating immunoglobulins are_______ cells.

Accepted Answer

A)  liver 
B)  plasma 
C)  helper T 
D)  NK 
E)  thymus 
A)  liver 
B)  plasma 
C)  helper T 
D)  NK 
E)  thymus

Question 7

Lymphoid tissues are connective tissues dominated by__________________

Accepted Answer

The answer of Lymphoid tissues are connective tissues dominated by__________________...

Question 8

The largest single collection of lymphoid tissue in the adult body is located in the

Accepted Answer

A)  tonsils. 
B)  thymus. 
C)  spleen. 
D)  lymph nodes. 
E)  liver. 
A)  tonsils. 
B)  thymus. 
C)  spleen. 
D)  lymph nodes. 
E)  liver.

Question 9

T is to _______as B is to_____ .

Accepted Answer

A)  thyroid; bowel 
B)  top; bottom 
C)  thymus- dependent; bone marrow- derived 
D)  non- thymus- dependent; bottom 
E)  none of the above 
A)  thyroid; bowel 
B)  top; bottom 
C)  thymus- dependent; bone marrow- derived 
D)  non- thymus- dependent; bottom 
E)  none of the above

Question 10

Cells that help regulate the immune response are ______cells.

Accepted Answer

A)  NK 
B)  helper T 
C)  cytotoxic T 
D)  B 
E)  plasma 
A)  NK 
B)  helper T 
C)  cytotoxic T 
D)  B 
E)  plasma

Question 11

Inappropriate or excessive immune responses to antigens are

Accepted Answer

A)  immunodeficiency diseases. 
B)  the result of stress. 
C)  signs of a weak system. 
D)  autoimmune diseases. 
E)  allergies. 
A)  immunodeficiency diseases. 
B)  the result of stress. 
C)  signs of a weak system. 
D)  autoimmune diseases. 
E)  allergies.

Question 12

________ cells enable the immune system to respond quickly and robustly if the same antigen is encountered a second time.

Accepted Answer

The answer of ________ cells enable the immune system to...

Question 13

In passive immunization, the

Accepted Answer

A)  body is deliberately exposed to an antigen. 
B)  immune system attacks normal body cells. 
C)  body receives antibodies produced by other humans. 
D)  body receives antibodies produced by an animal. 
E)  either C or D 
A)  body is deliberately exposed to an antigen. 
B)  immune system attacks normal body cells. 
C)  body receives antibodies produced by other humans. 
D)  body receives antibodies produced by an animal. 
E)  either C or D

Question 14

An accumulation of lymph in a region where lymphatic drainage has been blocked is termed _______.

Accepted Answer

The answer of An accumulation of lymph in a region...

Question 15

The specificity of an antibody molecule depends on the structure of the constant regions of the light and heavy chains.

Accepted Answer

A) True 
 B)False

Question 16

During a primary humoral response to antigens all of the following occur, except

Accepted Answer

A)  antibody levels do not peak until 1 to 2 weeks after the initial exposure. 
B)  B cells may differentiate into plasma cells immediately. 
C)  the first immunoglobulins to appear in circulation are of the IgM type. 
D)  B cells may undergo several rounds of mitosis before producing plasma cells and memory cells. 
E)  neutrophils invade the surrounding areas, releasing chemotactic substances. 
A)  antibody levels do not peak until 1 to 2 weeks after the initial exposure. 
B)  B cells may differentiate into plasma cells immediately. 
C)  the first immunoglobulins to appear in circulation are of the IgM type. 
D)  B cells may undergo several rounds of mitosis before producing plasma cells and memory cells. 
E)  neutrophils invade the surrounding areas, releasing chemotactic substances.

Question 17

When an antigen is bound to a Class I MHC molecule, it can stimulate a _____cell.

Accepted Answer

A)  plasma 
B)  helper T 
C)  NK 
D)  cytotoxic T 
E)  B 
A)  plasma 
B)  helper T 
C)  NK 
D)  cytotoxic T 
E)  B

Question 18

The primary function of the lymphoid system is

Accepted Answer

A)  defending the body against both environmental hazards and internal threats. 
B)  the production and distribution of plasma proteins. 
C)  circulation of nutrients. 
D)  the transport of hormones. 
E)  both B and D 
A)  defending the body against both environmental hazards and internal threats. 
B)  the production and distribution of plasma proteins. 
C)  circulation of nutrients. 
D)  the transport of hormones. 
E)  both B and D

Question 19

Suppressor T cells act to

Accepted Answer

A)  inhibit T and B cell activities. 
B)  suppress antigens. 
C)  limit antigen proliferation. 
D)  produce antibodies involved in autoimmunity. 
E)  erase memory T cells. 
A)  inhibit T and B cell activities. 
B)  suppress antigens. 
C)  limit antigen proliferation. 
D)  produce antibodies involved in autoimmunity. 
E)  erase memory T cells.

Question 20

Helper T cells do all of the following, except

Accepted Answer

A)  enhance production of memory and cytotoxic T cells. 
B)  enhance nonspecific defenses. 
C)  trigger B- cell division, plasma cell maturation, and antibody production. 
D)  provide a rapid response to a future exposure to the antigen. 
E)  attract and stimulate the activity of NK cells. 
A)  enhance production of memory and cytotoxic T cells. 
B)  enhance nonspecific defenses. 
C)  trigger B- cell division, plasma cell maturation, and antibody production. 
D)  provide a rapid response to a future exposure to the antigen. 
E)  attract and stimulate the activity of NK cells.

Exam 20: The Lymphoid System and Immunity

Immunity that results from exposure to an antigen in the environment is called_______ immunity.

The role of antigen- presenting cells in immunity is to

Each of the following is a physical barrier to infection, except

All of the following are true of the secondary response of humoral immunity, except that it

The thoracic duct originates from an expanded chamber called the________

The cells responsible for the production of circulating immunoglobulins are_______ cells.

Lymphoid tissues are connective tissues dominated by__________________

The largest single collection of lymphoid tissue in the adult body is located in the

T is to _______as B is to_____ .

Cells that help regulate the immune response are ______cells.

Inappropriate or excessive immune responses to antigens are

________ cells enable the immune system to respond quickly and robustly if the same antigen is encountered a second time.

In passive immunization, the

An accumulation of lymph in a region where lymphatic drainage has been blocked is termed _______.

The specificity of an antibody molecule depends on the structure of the constant regions of the light and heavy chains.

During a primary humoral response to antigens all of the following occur, except

When an antigen is bound to a Class I MHC molecule, it can stimulate a _____cell.

The primary function of the lymphoid system is

Suppressor T cells act to

Helper T cells do all of the following, except

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 Skeleton

Articulations

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Filters

T is to ___as B is to_ .