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18 Cards in this Set
- Front
- Back
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Noninfectious diseases
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Diseases that cannot spread from one person to another
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Infectious disease
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A disease that can be passed from one living thing to another
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Pathogens
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Agents that cause an infectious disease
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Immunity
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Protection or resistance to a disease
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Immune system
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the body system that fights pathogens
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Macrophage
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Cells that engulf microorganisms or viruses
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T cells
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These cells play an important role in coordinating the immune system
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B cells
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these cells mature in bones, make antibodies, and there are billions of them
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Antibodies
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Special proteins that cling to antigens, made by B cells
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Helper T cells
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These cells activate or tell Killer T cells to get to work, activate B cells, and make more helper T cells
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Killer T cells
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These cells kill cells infected with pathogens
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Antigens
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Small pieces of a pathogen that generates an immune response
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Memory B cells
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These cells remember how to make antibodies for a specific pathogen
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Allergy
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The overreaction of the immune system to harmless antigens
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Autoimmune disease
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A disease in which the immune system attacks the body's own cells
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Cancer
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Disease in which cells divide at an uncontrolled rate
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Antibiotic
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Substance that kills or slows down the growth of bacteria
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Pasteurization
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The use of heat to kill bacteria in food and beverages
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