Microbiology - Exam 1 Flashcards
Type of non-specific cell that kills virus infected cells and tumor cells that contains no memory
natural killer cell
Non-specific defense process that is a series of proteins activated by pathogens
complement
Non-specific defense chemical that is secreted by virus infected cells that alerts non-infected cells that a virus is present
interferon
Fever producing protein found in the vacuoles of phagocytic cells
interleukin-1
Non-specific defense mechanism that increases the efficiency of phagocytosis and speeds blood flow to an area
fever
The most common phagocytic WBC
neutrophil
Circulating phagocyte that migrates to tissue
monocyte
Monocyte that has enlarged and differentiated in tissue
macrophage
Type of immunity whose defense is unique to a species
innate
Type of immunity whose defense results from exposure to pathogens or foreign substances
acquired
Type of immunity that occurs when the body is exposed unintentionally to a pathogen and mounts a defense
naturally acquired immunity
Type of immunity that occurs when the body is exposed intentionally to a pathogen for the purposes of developing immunity
artificially acquired immunity
Type of immunity that occurs when the body develops its own antibodies to protect against an antigen
active immunity
Type of immunity that occurs when antibodies created elsewhere are introduced to the body
passive immunity
Type of lymphocyte that directly attacks invading antigens
T lymphocyte
Type of lymphocyte that produces antibodies that fight infection
B lymphocyte
Type of immunity that involves T lymphocytes
cell mediated immunity
Type of immunity that involves B lymphocytes
humoral immunity
Type of T lymphocyte that moves to an antigen and destroys it
cytotoxic T cell
Type of T lymphocyte that recognizes antigen on the macrophage and assists the interaction of the B cell and macrophage
helper T cell
Type of T lymphocyte that guards against overproduction of antibodies and cytotoxic T cells
suppressor T cell
Type of T lymphocyte that is left over and remembers a particular antigen so that a defense can be quickly mounted if the same antigen reappears
memory T cell
Substance secreted by help T cells that stimulates other helper and cytotoxic T cells to grow and divided
interleukin-2
Another name for antibody mediated immunity
humoral
Another name for antibody
immunoglobulin
Most abundant immunoglobulin which is found in blood plasma
IgG
Large immunoglobulin that cannot leave the bloodstream or cross the placenta
IgM
Immunoglobulin found in secretions
IgA
Immunoglobulin found in plasma that has receptor sites on the surface of B cells
IgD
Cell that carries around information about antigens that the body has fought off, so that a new defense can be mounted quickly if the antigen reappears
memory cell
First phase of the immune response in which there is rapid production of antibodies by plasma cells and inactivation of antigens
primary response
Second phase of the immune response in which there is response by memory B cells that have laid dormant in lymphatic tissue which allows a rapid and intense response
secondary response
