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19 Cards in this Set
- Front
- Back
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this is the invasion of body tissues by microorganisms and their proliferation
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infection
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this is alteration in normal tissue function
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disease
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this is ability to produce disease
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virulence
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this is an infectious organism transmitted to an individual by direct or indirect contact
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communicable
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what are the agents that cause infection?
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bacteria
viruses fungi protozoa rickettsia |
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there are 4 normal body defenses what are they?
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resident flora-our own
transient flora-come in contact with specific defenses nonspecific defenses-protect us regardless of exposure ex: skin |
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what are some nonspecific defenses?
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physical barriers, phagocytes, lactoferrin-in saliva, lysosyme-saliva and tears (IgA)
GI tract |
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what are the 3 stages of inflammation?
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vascular/cellular response
exudate regenerative |
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this stage in inflammation is non specific, adaptive mechanism, has five signs
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inflammation stage 1
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this stage is leukocytosis, WBC count increase
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exudate
serous purulent sanguineous-bloody serosanguineous-bloody and pus |
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this stage is replacement of tissue
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regenerative-collagen tissue only gets about 50% of strength back
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what is the 6 links in the chain of infection?
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etiological agent, reservoir, portal of exit, method of transmission, portal of entry to host, susceptible host
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what are the 3 etiological agents
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parasite-live off human tissue
carrier-person harvest disease but has no sx host-allows parasite to grow |
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the reservoir is the _____ of microorganisms?
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source
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what are some portal of exits from reservoir?
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resp. tract, GI tract, blood, urinary tract, reprod. tract
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what are the methods of transmission?
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direct, indirect, airborne
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this method of transmission is immediate and can be caught through touching, kissing, sex, talking, sneezing
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direct
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this method of transmission is either a substance that acts as an intermediary (kleenex w/ sputum on it) or it takes it into some port of entry but doesnt get sick (mosiquito)
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indirect
vehicle-born, vector-born |
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this method of transmission is droplet nuclei that stay in air
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airborne
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