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PHMY 610 FUNGUS EXAM 2 QUESTIONS AND VERIFIED ANSWERS
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PHMY 610 FUNGUS EXAM 2 QUESTIONS ANDVERIFIED ANSWERS
what are the 3 types of fungi
yeast, mould, dimorphic fungi
what are the three categories of fungal infections
superficial, opportunistic, invasive
T/F: Deuteromycetes cause most fungal infections in humans
true
fungi are eukaryotes or prokaryotes
eukaryotes
what is fungal cell wall composed of
chitin, glucan, ergosterol
what does ergosterol do
regulate permeability and fluidity of cell wall
why cant fungi be gram stained
because contains polysaccharides instead of peptidoglycan seen in bacteria
fungi are heterotrophs and are mostly _____ except for ______
mostly multicellular except yeasts are unicellular
are bacteria or fungi larger in diameter
fungi
what are reasons fungal infections are increased in prevalence
o Expansion of IC population
o Overuse of antibx
o Utilization of immunosuppressive therapies
, o Catheter placements
o AIDS pandemic
what are examples of fungus exposure
exposure at birth, already part of normal flora, infections from exogenous fungi
through inhalation or break in natural barriers, geographic area affect occurence
what are three defense mechanisms vs fungi
intact skin and mucous membranes + immunocompetence
what do B cells help with fungal infection
B-cell antibodies are created in response to fungal infection to suppress the
infection
what do T cells help with fungal infection
T-cell provides memory of infection to provide some type of resistance to
fungal infections
what are major risk factors for fungal infection
-Stem cell transplant
-Hematologic chemotherapy induction
-Solid organ transplant
what are minor risk factors for fungal infections
Chemotherapy, critical/acute illness, mechanical ventilation, central venous
catheter, hemodialysis patients, antibx overuse, diabetes, intra-abdominal
surgery, AIDS, TPN
what are mycoses
fungal infections
what are three categories of acquiring mycoses
allergy, mycotoxicosis, mycoses invasion
what is mycotoxicosis
ingestion of fungal toxins in contaminated food or poisonous mushrooms
what are the types of mycoses invasion of living tissue
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