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12 Cards in this Set
- Front
- Back
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What is your first line of defense in your immune system? |
The skin (a physical barrier) and the linings of all internal body systems
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What is your second line of defense in your immune system?
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The two responses - innate immune response and acquired immune response
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What is an innate immune response?
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A quick, general immune response that all living things are born with
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What is an acquired immune response?
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A highly specific attack on a pathogen or antigen by the creation of antibodies to fight it
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How does an acquired immune response work?
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The pathogen enters the body and the phagocyte engulfs if and puts its antigens on the outside. Then the white blood cell creates more T cells who signal the B cells to make antibodies. The antibodies clump the antigens together and then are destroyed by the killer T cells. Some antibodies remain on the B cells for future use.
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What are B cells?
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A type of white blood cell that recognizes antigens present in the body and produces specific antibodies to fight them
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What are T cells?
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Specialized white blood cells that fight disease either by activating B cells (helper T cells) or by attacking antigens directly (killer T cells)
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What are vaccines?
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A special version of an antigen that provides immunity against a disease
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What are allergens?
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Any substance that causes an allergic reaction
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What is histamine?
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A chemical released by the body in response to an injury or allergen; can cause symptoms such as a runny nose and watery eyes
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What is AIDS?
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Acquired Immunodeficency Syndrome - a virus that targets the immune system by infecting helper T cells
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What is the phagocyte?
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A type of white blood cells that fight disease either by activating B cells (helper T cells) or by attacking antigens directly (killer T cells)
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