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Definition
| any foreign agent that causes a disease |
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Definition
| any change, other than an injury, that disrupts the normal functions of the body |
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Term
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Definition
| infectious diseases are caused by microorganisms or germs |
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Definition
GUIDELINES USED TO IDENTIFY THE MICROORGANISMS THAT CAUSES A SPECIFIC DISEASE
- The pathogen should always be found in the body of a sick organism and should not be found in a healthy one.
- The pathogen must be isolated in grown in the laboratory in pure culture.
- When the purified pathogens are placed in a new host, they should cause the same disease that infected the original host.
- The injected pathogen should be reisolated form the second host. I should be indentical to the original pathogen.
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Definition
| poisons that produce illness by disrupting bodily functions |
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Definition
| animals that carry diease-causing organisms from person to person |
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Definition
| compounds that kill bacteria without harming the cells of humans or animals |
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Definition
| nonspecific defense reaction to tissue damage cause by reaction or injury |
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Definition
| elevated body temperature |
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Definition
| a group of proteins produced by a virus-infecting cell that help other cells resist viral protection |
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Definition
| a series of specific defenses that attack the disease causing agent |
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Definition
| immunity against pathogens in the body fluids (blood and lymph) |
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Definition
| protein that helps destroy pathogens |
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Definition
| an immune response in which killer T cellsa attack antigen-bearing cells directly |
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Definition
| condition in which people who have survived exposure to a disease never develop it again |
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Definition
| injection of a weakened or mild form of a pathogen to produce immunity |
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Definition
| immunity produced by a vaccine; so-called because the body has the ability to mount an active immune response against the pathogen |
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Definition
| overreaction of the immune response that results from a large input of a limiting nutrient |
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Definition
| chemical released by activated mast cells that increase the flow of blood and fluids to the surrounding area |
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Definition
| allergic reaction in which smooth muscle contractions reduce the size of air passageways in teh lungs and make breathing very difficult |
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