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24 Cards in this Set
- Front
- Back
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Disease
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Any change, other than an injury, that disrupts the normal functions of the body.
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Pathogen
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Disease-causing agent, such as a bacterium or fungus.
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Germ theory of Disease
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Idea that infectious deseases are caused by microorganisms, or germs.
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Koch's postulates
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Series of guidelines used to identify the microorganisms that causes a specific disease.
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Vector
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Animal that carries disease-causing organisms from person to person.
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Antibiotic
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Compound that blocks the growth and reproduction of bacteria.
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Inflammatory response
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Nonspecific defense reaction to tissue damage caused by injury or infection.
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Fever
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Elevated body temperature that ocurs in response to infection.
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interferon
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One of a group of proteins that help cells resist viral infection.
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Immune response
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The body's specific defenses that attack a disease-causing agent.
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Antigen
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Substance that triggers an immune response.
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Humoral immunity
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Immunity against pathogens in the body fluids.
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Antibody
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Specialized protein that helps destroy disease-causing organisms.
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cell-mediated immunity
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An immune response in which killer T cells attack antigen-bearings cells directly.
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permanent immunity
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Condition in which people who have survived exposure to a disease neve develop it again.
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Vaccination
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Injection of a weekened or mild form of a pathogen to produce immunity.
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active immunity
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Immunity produced by a vaccine; so-called becasue the body has the ability to mount an active immune response against the pathogen.
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allergy
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Overreaction of the immune system that results when antigens bind to mast cells.
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histamine
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Chemical released by activated mast cells that increase the flow of blood and fluids to the surrounding area.
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asthma
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Allergic reaction in which smooth muscle contraactions reduce the size of air passagways in the lungs and make breathing very difficult.
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Tumor
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Mass of growing tissue that may form when a cell or group of cells begins to grow and divide uncontrollably.
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Metastasis
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Spread of a cancerous tumor beyond its original site.
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immunity
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ability of the body to resist a specific pathogen
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passive immunity
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short-term immunity caused when antibodies produced by other animals for a pathogen are injected into the body
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