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16 Cards in this Set
- Front
- Back
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What are the three layers in order from outer to inner of the skin? |
Epidermis, Dermis, and Hypodermis |
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Where do some yeast and bacteria thrive on the skin? |
On the epidermis, in hair follicles, and sweat ducts |
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What kinds of normal microbiota inhabit the skin? Can they be eliminated with scrubbing? |
Staphylococcus and Micrococcus grow on everyone. S. epidermis is most common. No amount of scrubbing can eliminate them. |
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What is folliculitis? Where does it occur? |
An infection of a hair follicle, or pimple. It occurs at the base of the eye, it is a sty. If it spreads to surrounding tissue, it is a boil. |
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The skin is an effective barrier against invading microbes because... |
The outer layers are dead and covered in salt. |
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Which of the following would not be a likely member of the normal microbiota of the skin surface and why? Halophile, Lipophile, Obligate anaerobe, and Acidophile |
Obligate anaerobe, because it cannot survive in extremes of oxygen. |
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What might happen to an individual who frequently uses hand sanitizer? |
Since hand sanitizer is nonspecific anf does not just kill the pathogens an individual could be more susceptible to skin infections, because much of the normal microbiota would be eliminated. |
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Why does Pseudomonas aeruginosa rarely cause disease? |
It cannot penetrate the intact skin. |
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What characterizes Gas gangrene? |
It is characterized by blackening of the skin due to necrosis, crepitation (crackly sound under skin), and foul-smelling drainage. |
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One feature that differentiates Staphylococcus aureus from other staphylococci is its... |
Production of both coagulase and beta-lactamase. |
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Virulent strains of Staphylococcus aureus can resist penicillin because they produce... |
Beta-lactamase. |
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Necrotizing fascilitis is caused by... |
Both Streptococcus pyogenes and Staphylococcus aureus. |
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Transovarian transmission is a process by which... |
An infected female vector transmits a pathogen to the eggs in its ovaries. |
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What is the pathogenic process underlying Rocky Mountain spotted fever? |
Damage to blood vessels. |
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Clostridium pefringens is a strict anaerobe that is a common environmental contaminant and consequently of wounds due to its ability to |
Produce endospores. |
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Why are viral skin infections more difficult to treat than those caused by bacteria? |
Viruses use host enzymes to replicate and perform metabolic functions. |
