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19 Cards in this Set

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  • Back
Pathogens
Disease-causing organisms
Infectious Diseases
Diseases caused by pathogens
Nonspecific Defenses
Do not distinguish one invader from another
Interferon
Protein that prevents viruses from reproducing
Inflammatory Response
Redness, swelling, and pain
Histamines
Cause nearby blood vessals to expand, allowing more bood to flow
Immunity
Your body is resistant to the pathogen that causes a specific disease
Antigen
Large molecule that causes an immune response
Antibody
Protein found on the surface of certain WBC or in blood plasma
Humoral Immunity
Specific immunity provided by B cells htat produce antibodies
Cell-mediated Immunity
Involves T cells attacking body cells that are infected with a pathogen
Cytotoxic T Cells
Attack cells infected with the pathogen
Helper T Cell
Secretes chemicals that help T cells and B cells respond to pathogens
Memory Cells
Cells that remain in the body for a long time
Vaccine
Dose of a pathogen or part of a pathogen that has been disabled or destroyed so it is no longer harmful
Active Immunity
When the body produces antibodies against infection
Passive Immunity
When body receives antibodies for a particular disease from another source
Allergy
Abnormal reaction to a non-harmful antigen
Autoimmune Disease
Condition in which the immune system attacks some of the body's own molecules