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21 Cards in this Set
- Front
- Back
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Microbial Control Methods?
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Physical Agents, Chemical Agents, & Mechanical Removal Methods
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_______ is the destruction of all microbial life.
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Sterilization
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_____ destroys most microbial life, reducing contamination on inanimate surfaces.
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Disinfection
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_____ is the same as disinfection except a living surface is involved.
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Antisepsis
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_____ is the mechanical removal of most microbes fron an animate or inanimate surface.
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Decontamination (IMPT in Homeland Security)
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The destruction or removal of vegetative pathogens but not bacterial endospores. Usually used only on inanimate objects.
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Disinfection
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Chemicals applied to body surfaces to destroy or inhibit vegetative pathogens.
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Antisepsis
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What microbes have high resistance?
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Prions; bacterial endospores
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What microbes have moderate resistance?
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Protozoan cysts; some funal sexual spores (zygospores); some viruses.
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What microbes are the least resistance?
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Most bacterial vegetative cells; fungal spores( other than zygospores) and hypae; enveloped virus; yeasts; and protozoan trophozoites
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The destruction is the goal of sterilization bc any process that kills endospores will invariably kill all less resistant ____ forms.
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microbial
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If the microbe has sustained metabolic or structural damage to such an extent that it can no longer reproduce, then it is no longer_____.
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viable. (Microbial Death)
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_____ agents prevent the growth of bacteria on tissues or on objects in the environment, and fungistatic chemicals inhibit fungal growth.
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Bacteristatic
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____ is any cleaning technique that mechanically removes microorganisms as well as other debris to reduce contamination to safe levels.
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Sanitization
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____ reduces the number of microbes on the human skin. Process involves scrubbing the skin or immersing it in chemicals, or both.
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Degermation
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____ is defined as the growth of microorganisms in the blood and other tissues.
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Sepsis
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The cellular targets of physical and chemical agents fall into four general categories?
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1. the cell wall
2. the cell membrane 3. cellular synthetic processes (DNA, RNA), and 4. Proteins |
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Common Methods of Moist Heat Control?
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1. steam under pressure
2. nonpressurized steam 3. pasteurization, & 4. boiling water |
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_____ is the technique in which heat is applied to liquids to kill potential agents of infection and spoilage, while retaining the flavor. (ex: milk, juice, beer)
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Pasteurization
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Pyrimidine Dimers- specific molecular damage occurs on these bases, which form abnormal linkages. Bonds occure bw adjacent bases on the same ___ strand & interfere with normal DNA ____ & ______.
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DNA
replication & transcription (resulits cellular death & inhibits growth) |
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High efficiency particulate air HEPA filters are widely used to provide a flow of _______ air to hosptial rooms & sterile rooms.
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decontaminated
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