36 Questions
Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?
Adaptive immunity
Which cells of the immune system are always present and ready to eliminate infectious microbes?
Innate immune cells
What is the function of B lymphocytes in the immune system?
To produce antibodies
What is the function of T lymphocytes in cell-mediated immunity?
To kill infected cells harboring microbes in the cytoplasm
What is the function of helper T lymphocytes in the immune system?
To produce cytokines that activate phagocytes
What is the function of antigen-presenting cells in the immune system?
To capture antigens of microbes and display them for recognition by T cells
Which type of immunity consists of humoral immunity and cell-mediated immunity?
Adaptive immunity
What is the main function of plasma cells in the immune system?
To produce antibodies
Where are lymphocytes and antigen-presenting cells organized in the immune system?
In peripheral (secondary) lymphoid organs
What is the function of naive lymphocytes in the immune system?
To search for foreign antigens in peripheral lymphoid organs
Which type of immunity is the early line of defense in the immune system?
Innate immunity
What are the sequential phases of adaptive immune responses?
Antigen recognition, activation of the lymphocytes, differentiation of effector and memory cells, elimination of the microbes, decline of the immune response, long-lived memory
Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?
Adaptive immunity
Which cells of the immune system are always present and ready to eliminate infectious microbes?
Innate immune cells
What is the function of B lymphocytes in the immune system?
To produce antibodies
What is the function of T lymphocytes in cell-mediated immunity?
To kill infected cells harboring microbes in the cytoplasm
What is the function of helper T lymphocytes in the immune system?
To produce cytokines that activate phagocytes
What is the function of antigen-presenting cells in the immune system?
To capture antigens of microbes and display them for recognition by T cells
Which type of immunity consists of humoral immunity and cell-mediated immunity?
Adaptive immunity
What is the main function of plasma cells in the immune system?
To produce antibodies
Where are lymphocytes and antigen-presenting cells organized in the immune system?
In peripheral (secondary) lymphoid organs
What is the function of naive lymphocytes in the immune system?
To search for foreign antigens in peripheral lymphoid organs
Which type of immunity is the early line of defense in the immune system?
Innate immunity
What are the sequential phases of adaptive immune responses?
Antigen recognition, activation of the lymphocytes, differentiation of effector and memory cells, elimination of the microbes, decline of the immune response, long-lived memory
Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?
Adaptive immunity
Which type of immunity is the early line of defense, mediated by cells and molecules that are always present and ready to eliminate infectious microbes?
Innate immunity
What are the cells of adaptive immunity that are the only cells with clonally distributed receptors specific for different antigens?
T lymphocytes
What is humoral immunity?
Immunity in which antibodies neutralize and eradicate extracellular microbes and toxins
What is cell-mediated immunity?
Immunity in which T lymphocytes eradicate intracellular microbes
What do B lymphocytes produce?
Antibodies
What do helper T lymphocytes produce?
Cytokines
What do cytotoxic T lymphocytes (CTLs) do?
Kill infected cells harboring microbes in the cytoplasm
What do antigen-presenting cells (APCs) do?
Capture antigens of microbes that enter through epithelia, concentrate these antigens in lymphoid organs, and display the antigens for recognition by T cells
Where are lymphocytes and APCs organized?
In peripheral (secondary) lymphoid organs
What do naive lymphocytes do?
Search for foreign antigens
Where do plasma cells remain?
In the bone marrow
"Test Your Knowledge: The Immune System and Its Defense Mechanisms" Are you curious to know how your body fights against infections and diseases? This quiz will assess your understanding of the immune system's functions, including the innate and adaptive defense mechanisms. Challenge yourself with questions on lymphocytes, antigens, and the specialization of immune cells. Sharpen your knowledge of immunology and discover how the immune system protects you from microbial threats.
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