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Microbiology Chapter 15

The study of fungi is referred to as? mycology
Fungi that use organic compounds as a carbon source are called? heterotropic
Fungi that obtain nutrients by decomposing dead organic matter are? saprophytes
fungi that do not use light as an energy source are? nonphototropic
fungi that take up nutrients in solution are? absorptive
The individual filaments of the interconnected branches of fungi are called? hyphae
The only fungi that does not have an interconnected branching system is? yeasts
a branching set of hyphae is called a? myccilium
fungi that are single celled organisms? yeasts
fungi that are filamentous organisms are? molds
fungi that are organisms that come together to form large, fruiting structures are? fleshy fungi
lower fungi that are water molds with uniflagellated spongiospores and gametes are called? chytridiomycetes
Lower Fungi that are water molds with biflagellate spongiospores and male gametes, nonmotile female gametes and sexual spores are called? oomycetes
Lower Fungi that are terrestrial fungi with nonmotile spongiospores and zygospores--several general parasitize weakened human patients--are called zygomycetes
A fungi is considered a ____? if the mycelia present are coenocytic. Lower Fungi
a fungi is considered a ____? if the mycelia present are septate . Higher Fungi
igher fungi that have ascospores formed in an ascus (sac)--some parasitic on plants or animals-- are called? Ascomycetes
Higher Fungi that have basidiospores formed on a club shaped basidium--some are parasitic on plants or animals-- are called? Basidiomycetes
Higher Fungi that lack sexual spores--some are parasitic on plants or animals--are called? Deuteromycetes
Fungi that can switch between growing as a single celled yeast and a mycelium have a condition that is called? dimorphism--meaning two shapes
Fungi are grown on what type of agar? Sabourand agar
How is Sabourand agar different from regular agar? has extra glucose as well as a more acidic environment
Fungi cause many ?? diseases. plant
Fungi cause a relatively small number of ? diseases. human
What is the pathogen of cryptococcosis and how is it transmitted? Cryptococcus neoformans
what are characteristics of cryptococcosis? f inhaled into lungs, causes only mild respiratory infection.
what could a person with a compromised immune system acquire ffrom exposure to cryptococcosis? cryptococcal meningitis--as it ias spread to the CNS. AIDS patients highly susceptible.
Where is cryptococcosis found? in soil and bird droppings, especially pigeons.
how is cryptococcosis treated? Amphotercin B
What is the pathogen of Candidiasis? Candida albicans
Candida albicans are considered to be what kind of pathogens? opportunistic
Candida albicans thrive in what type of environment? warm and moist
Candida albicans are found where in almost every human being? on the skin, mucous membranes andin the GI tract.
Factors which predispose one to contracting Candidiasis are? pregnancy, birth control, diabetes, and antibiotic therapy
The most common sites for a Candidiasis infection are? vagina, mouth, and diaper area of infants
Candidiasis of the mouth is called? thrush
Candidiasis of the vagina is called? Candida vaginitis
Treatment of Candidiasis is? miconazole and clotrimazole for superficial candidiasis
The general name for fungal infections of the hair, skin and nails is? dermatomycosis
the fungi that cause dermatomycosis produce enzymes that digest ? keratin
The medical names for dermatomycosis infections use two words. ? followed by the name of the affected region. tinea
athletes foot is called? tinea pedis
groin or jock itch is called tinea cruris
dermatomycosis of the scalp is called tinea capitis
dermatomycosis of the nails is called tinea unguinum
dermatomycosis of any other part of the body except for feet, groin, scalp, or nails is called? tinea corporis
treatment for fungal infection are superficial and most can be cured using topical agents such as? miconazole-micatin, tolnaftate-tinactin, undecylenic acis-Desenex
Micatin is ? miconazole
Tinactin is? tolnaftate
Desenex is ? undeclyenic acid
Fungal infctions that affect scalp and nails sometimes do not repsond well to topical therapy, and are treated orally with? griseofulvin
The pathogen of histoplasmosis is? Histoplasma capsulatum
histoplasmosis is trasmitted by? inhalation of spores in dry, dusty contaminated soil
histoplasmosis is the most common ________ caused by a fungus? respiratory disease
Histoplasma capsulatum is a ____ fungus. dimorphic
Histoplasma capsulatum can grow as a _____ above 35 C and produces ______ below that temperature yeast, mycelia
35 C is equivlent to what degree in farenheit? 95
Histoplasma capsulatum is found in soil where _____or______dropping are plentiful. bat, bird
people can become infected with histoplasmosis by exploring_______. caves
pople can become infected with histoplasmosis when they clean__________. chicken coops
people can become infected with histoplasmosis when they enter_______ , _______ or other bird roosting areas. attics, barns
histoplasmosis occurs worldwide. In the US it occurs mostly in the ?? Ohio-Mississippi River Valley.
About _____% of the long term residents in the Ohio-Mississippi River Valley have been infected by histoplasmosis at some time. 80%
Histoplasmosis is treated by? amphotericin B
What is the pathogen for Blastomycosis? Blastomyces dermatitidis
Blastomycosis is transmitted by__________ and ________ dusty soil and bird droppings
Blastomycosis symptoms start in the lungs, and appear as pulmonary _____? TB
Blastomycosis symplotms include _____ and _____ cough and chest pain
Blastomycosis symptoms more often than not also affects? the skin, bones and testes
Cutaneous Blastomycosis causes raised _________ usually on exposed areas such as the face and hands wartlike lesions
Treatment for Blastomycosis is_______? self limiting in mild cases, amphotericin B for severe cases
Without treatment, systemic blastomycosis is _______ fatal
What is the pathogen of coccidiodomycosis Coccidioides immitis
coccidiodomycosis is transmitted by_______ inhalation of spores in the dust into the lungs
Within the US, coccidiodomycosis is found where? San Joaquin Valley of California, the southwest,parts of Mexico, and South America
What do the areas where coccidiodomycosis is found have in common? wemiarid climate and alkaline soil
What is the treatment for coccidiodomycosis? it is self limiting, in severe cases --amphotericin B
Created by: RN2Bin06