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Terms in this set (87)
What is immunity? The body's ability to resist disease.
What is an antigen? A substance that elicits an immune response, usually a foreign
protein.
What is the hallmark difference between Immunity is specific and has memory, while inflammation is
immunity and inflammation? nonspecific.
What role does the immune system play in It recognizes and eradicates mutated cells that appear
cancer defense? foreign, preventing cancer development.
What are the two main types of immunity? Innate immunity and acquired immunity.
What is innate immunity? Immunity present at birth, involving neutrophils and
monocytes, and is nonspecific.
What is acquired immunity? Immunity that develops after birth and can be active or
passive.
It is immunity developed through the production of specific
antibodies against specific antigens.
B and T cells are responsible for the development of acquired
immunity
How is active acquired immunity obtained? By being exposed to an antigen and producing specific
antibodies.
What is a common example of active Immunizations, where the body is exposed to a mild or dead
acquired immunity? form of an antigen.
How is passive acquired immunity obtained? Through the transfer of antibodies from another source, such
as breastfeeding or maternal transfer.
What are IgG antibodies responsible for? Memory in the immune response and protection against
previously encountered antigens.
, What is the function of IgA antibodies? To provide a first line of defense in secretions, including
breast milk.
What is the role of IgM antibodies? To initiate the primary immune response during the first
exposure to an antigen.
What happens during the primary immune It takes 7-10 days to produce enough IgM antibodies to
response? effectively combat an infection.
What is the significance of B lymphocytes in They mature into plasma cells that produce antibodies
humoral immunity? (immunoglobulins).
What is the difference between specific and Specific immunity targets specific antigens, while nonspecific
nonspecific immunity? immunity responds to a broad range of pathogens.
What is the role of T lymphocytes in the They patrol the body for foreign substances and help regulate
immune system? the immune response.
What is the consequence of long-term Increased risk of developing cancer due to diminished
immunosuppressant use? immune surveillance.
How do antibodies from breast milk protect They confer passive immunity, providing protection until the
a newborn? baby can produce its own antibodies.
What is selective IgA deficiency? A congenital disorder where individuals do not produce IgA,
leading to frequent upper respiratory infections.
What is the significance of the secondary It is a faster and more effective response due to the presence
immune response? of memory IgG antibodies.
What is the role of macrophages in innate They are mature monocytes that help engulf and destroy
immunity? pathogens.
What is the function of antibodies in the To identify and neutralize foreign objects like bacteria and
immune system? viruses.
What is the importance of immune memory? It allows for a quicker and stronger response upon re-
exposure to the same pathogen.
What is the primary function of IgM IgM antibodies are the first to fight an infection, produced by
antibodies? B cells to eradicate pathogens.
How long does it typically take for IgM It takes about 7-10 days to produce enough IgM antibodies to
antibodies to be produced after infection? feel better.
What role do IgD antibodies play in the IgD antibodies help new B cells differentiate into specific
immune system? types that target particular antigens.
What is the function of IgE antibodies? IgE antibodies are important in fighting parasites and are
responsible for allergic responses.
What is humoral immunity? Humoral immunity involves B cells and antibodies, where B
cells mature into plasma cells that produce antibodies.
What is cell-mediated immunity? Cell-mediated immunity involves T lymphocytes, which directly
attack infected or cancerous cells.