Question 1

Match the lymphocyte types with the appropriate characteristic.
-Natural Treg cells

Accepted Answer

A) Effector cells that can directly destroy virally infected target cells 
B) Downregulate the actions of other T and B cells 
C) Relatively high avidity for self-antigens 
A) Effector cells that can directly destroy virally infected target cells 
B) Downregulate the actions of other T and B cells 
C) Relatively high avidity for self-antigens C

Question 2

In antigen recognition by T lymphocytes, each cell

Accepted Answer

A) is clonally restricted. 
B) expresses a receptor able to react with a given peptide. 
C) can only recognize a limited number of antigens. 
D) All of the above. 
A) is clonally restricted. 
B) expresses a receptor able to react with a given peptide. 
C) can only recognize a limited number of antigens. 
D) All of the above. D

Question 3

Match the T cell populations with the appropriate description.
-Helper T type 1 (Th1)

Accepted Answer

A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells 
A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells B

Question 4

Match the lymphocyte types with the appropriate characteristic.
-Suppressor T lymphocytes or T suppressor (Ts) cells

Accepted Answer

A) Effector cells that can directly destroy virally infected target cells 
B) Downregulate the actions of other T and B cells 
C) Relatively high avidity for self-antigens 
A) Effector cells that can directly destroy virally infected target cells 
B) Downregulate the actions of other T and B cells 
C) Relatively high avidity for self-antigens

Question 5

Functions of an activated T lymphocyte include

Accepted Answer

A) proliferation and differentiation. 
B) production of cytokines. 
C) development of effector function. 
D) All of the above. 
A) proliferation and differentiation. 
B) production of cytokines. 
C) development of effector function. 
D) All of the above.

Question 6

Match the lymphocyte types with the appropriate description.
-B lymphocytes

Accepted Answer

A) Lead to antibody production 
B) Destroy target cells through an extracellular nonphagocytic mechanism (cytotoxic reaction) 
C) Kill target cells sensitized with antibody 
A) Lead to antibody production 
B) Destroy target cells through an extracellular nonphagocytic mechanism (cytotoxic reaction) 
C) Kill target cells sensitized with antibody

Question 7

Match the lymphoid organs with the appropriate classification.
-Bone marrow

Accepted Answer

A) Primary 
B) Secondary 
A) Primary 
B) Secondary

Question 8

When mature T lymphocytes leave the thymus, their T cell receptors are either CD4+ or

Accepted Answer

A) CD2+. 
B) CD8+. 
C) CD19+. 
D) CD31+. 
A) CD2+. 
B) CD8+. 
C) CD19+. 
D) CD31+.

Question 9

Match the lymphocyte types with the appropriate description.
-K-type lymphocytes

Accepted Answer

A) Lead to antibody production 
B) Destroy target cells through an extracellular nonphagocytic mechanism (cytotoxic reaction) 
C) Kill target cells sensitized with antibody 
A) Lead to antibody production 
B) Destroy target cells through an extracellular nonphagocytic mechanism (cytotoxic reaction) 
C) Kill target cells sensitized with antibody

Question 10

Surface markers on lymphocytes can be used to

Accepted Answer

A) identify and count CD4+ and CD8+ cells. 
B) classify leukemic cells. 
C) monitor patients on immunotherapy. 
D) All of the above. 
A) identify and count CD4+ and CD8+ cells. 
B) classify leukemic cells. 
C) monitor patients on immunotherapy. 
D) All of the above.

Question 11

Diminished immunoglobulin levels can be related to

Accepted Answer

A) a deficit of activated T lymphocytes. 
B) impaired phagocytosis. 
C) lack of complement production. 
D) overproduction of B lymphocytes. 
A) a deficit of activated T lymphocytes. 
B) impaired phagocytosis. 
C) lack of complement production. 
D) overproduction of B lymphocytes.

Question 12

Mature T lymphocytes survive for ________ compared with B lymphocytes, which survive for a few days.

Accepted Answer

A) a few hours 
B) several months 
C) years 
D) Either B or C 
A) a few hours 
B) several months 
C) years 
D) Either B or C

Question 13

Match the lymphoid organs with the approximate percentage of T lymphocytes.
See Table 4-1.
  
-Bone marrow

Accepted Answer

A) 80% 
B) 60% 
C) 20% 
D) 10% 
A) 80% 
B) 60% 
C) 20% 
D) 10%

Question 14

Match the lymphoid organs with the appropriate classification.
-Lymph nodes

Accepted Answer

A) Primary 
B) Secondary 
A) Primary 
B) Secondary

Question 15

Which characteristic is not associated with B lymphocytes?

Accepted Answer

A) Demonstrate surface immunoglobulin (sIg) 
B) Differentiate into plasma cells with antigenic stimulation 
C) Participate in an anamnestic response as memory cells 
D) Can directly lyse a foreign antigen 
A) Demonstrate surface immunoglobulin (sIg) 
B) Differentiate into plasma cells with antigenic stimulation 
C) Participate in an anamnestic response as memory cells 
D) Can directly lyse a foreign antigen

Question 16

Match the T cell populations with the appropriate description.
-Helper T type 2 (Th2)

Accepted Answer

A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells 
A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells

Question 17

Match the T cell populations with the appropriate description.
-Regulatory T (Treg)

Accepted Answer

A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells 
A) Play a greater role in the regulation of antibody production and the release of cytokines required for B cell differentiation 
B) Responsible for cell-mediated effector mechanisms 
C) An immunoregulatory type of Th cells

Question 18

Match the lymphoid organs with the approximate percentage of T lymphocytes.
See Table 4-1.
  
-Blood

Accepted Answer

A) 80% 
B) 60% 
C) 20% 
D) 10% 
A) 80% 
B) 60% 
C) 20% 
D) 10%

Question 19

What is the source of undifferentiated T lymphocytes?

Accepted Answer

A) Bone marrow 
B) Lymph nodes 
C) Liver and spleen 
D) Thymus 
A) Bone marrow 
B) Lymph nodes 
C) Liver and spleen 
D) Thymus

Question 20

The CD cell surface membrane marker that appears during the first stage of T lymphocyte development and remains present as an identifying marker to T lymphocytes is

Accepted Answer

A) CD2. 
B) CD4. 
C) CD8. 
D) CD10. 
A) CD2. 
B) CD4. 
C) CD8. 
D) CD10.

Exam 4: Cells and Cellular Activities of the Immune System: Lymphocytes and Plasma Cells

Match the lymphocyte types with the appropriate characteristic. -Natural Treg cells

In antigen recognition by T lymphocytes, each cell

Match the T cell populations with the appropriate description. -Helper T type 1 (Th1)

Match the lymphocyte types with the appropriate characteristic. -Suppressor T lymphocytes or T suppressor (Ts) cells

Functions of an activated T lymphocyte include

Match the lymphocyte types with the appropriate description. -B lymphocytes

Match the lymphoid organs with the appropriate classification. -Bone marrow

When mature T lymphocytes leave the thymus, their T cell receptors are either CD4+ or

Match the lymphocyte types with the appropriate description. -K-type lymphocytes

Surface markers on lymphocytes can be used to

Diminished immunoglobulin levels can be related to

Mature T lymphocytes survive for ________ compared with B lymphocytes, which survive for a few days.

Match the lymphoid organs with the approximate percentage of T lymphocytes. See Table 4-1. -Bone marrow

Match the lymphoid organs with the appropriate classification. -Lymph nodes

Which characteristic is not associated with B lymphocytes?

Match the T cell populations with the appropriate description. -Helper T type 2 (Th2)

Match the T cell populations with the appropriate description. -Regulatory T (Treg)

Match the lymphoid organs with the approximate percentage of T lymphocytes. See Table 4-1. -Blood

What is the source of undifferentiated T lymphocytes?

The CD cell surface membrane marker that appears during the first stage of T lymphocyte development and remains present as an identifying marker to T lymphocytes is

An Overview of Immunology

Antigens and Antibodies

Cells and Cellular Activities of the Immune System: Granulocytes and Mononuclear Cells

Soluble Mediators of the Immune System

Safety in the Immunology-Serology Laboratory

Quality Assurance and Quality Control

Basic Serologic Laboratory Techniques

Rapid Testing

Precipitation and Particle Agglutination Methods

Electrophoresis Techniques

Labeling Techniques in Immunoassay

Flow Cytometry

Molecular Laboratory Techniques

Infectious Diseases: Traditional and Alternate Diagnostic Techniques

Streptococcal Infections

Syphilis

Vector-Borne Diseases

Toxoplasmosis

Cytomegalovirus

Infectious Mononucleosis

Viral Hepatitis

Rubella and Rubeola Infections

Primary and Acquired Immune Deficiency Syndromes

Hypersensitivity Reactions

Immunoproliferative Disorders

Tolerance, Autoimmunity, and Autoimmune Diseases

Systemic Lupus Erythematosus

Rheumatoid Arthritis

Transplantation: Hla, Solid Organ, and Hematopoietic Stem Cells

Tumor Immunology and Up-To-Date Applications of Next-Generation Sequencing

Primer on Vaccines

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