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17 Cards in this Set
- Front
- Back
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what symptoms are produced in a host becuase of a virus?
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non-specific: secondary effects of release of substances from infected cells, injured cells, or immune response cells
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what produces fever?
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endogenous pyrogens induce fever, arthralgia and myalgia, pain in the joints and muscles
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what is malaise
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lack of energy for doing normal activities becuase body is using energy to produce viral products. Example is when your skin hurts
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when looking at the white blood cell counts, what is characteristic of bacteria and not usually seen in viral?
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neutrophil count rise in peripheral circulation
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what does -itis mean?
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inflammation in, not infestation (although the two are often correlated)
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encephalitis is usually caused by what, and is it serious?
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virus, yes
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menengitis is serious and life threatening when?
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when it is bacterial
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local infections are usually more or less serious than systemic infections?
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usually less serious, unless they are located in a seriouc local tissue
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immunologic response to infection can cuase what effects?
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limiting the spread, tissue damage caused by the immune system itself
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what are the characteristics of theh primary ifection at the site of entry
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may produce symptoms, or just serve as a source, replication begins here, and it has an incubation period where the effects aren't felt
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incubation of chicken pox is predicable or not?
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to the day
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how does the spread of virus to other susceptible tissues?
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lymph or blood (viremia), direct cell-to-cell extension, cell associated spread (HIV)
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what are the characteristics of the secondary site of infection
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infection initiated, classic symptoms appear
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What is an infectous protein disease?
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Prion
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what is the study of mechanisms that tend to maintain and protect uniquemess of "self" through recognition and rejection of "non-self".
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immunology
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what provide the physical exclusions of "non-self" violators
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mucous membtanes and skin
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what make up the cell surface markers
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proteins, lipoproteins, and glycoproteins
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