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94 terms

micro2test7

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yeasts
single-celled eucaryotic organisms
yeasts
reproduce by budding
molds
multi cellular eucaryotic organisms
molds
grow in slender thread like strand called hyphae
molds
a visible mass of hyphae growing together is a mycellum
dermatomycosis
any infection of the skin, hair, or nails with a fungus
dermatomycosis
most often refers to ringowrm, atheletes foot, jock itch, or tinea infections
dermatomycosis causes
epidermophyton, microsporum, trichophyton
dermatomycosis
all are molds
dermatomycosis
transmitted via direct contact with infected people or pets
dermatomycosis
most often affects children under 12 yrs
coccidioidomycosis
caused by a mold. called coccidioides immitis
coccidioidomycosis
a normal flora organism of the sail
coccidioidomycosis
transmitted via inhalation of dust containing the spores
coccidioidomycosis
causes an influenze like infection with cough, painful breathing, malaise, and loss of apetite
coccidioidomycosis
may disseminate to the rest of the body, often causing a form of meningitis
histoplasmosis
caused by histoplasma capsulatum
a dimorphic organism
blastomycosis, histoplasmosis
dimorphic organism; histoplasmosis
grows as a yeast above 35 celcius & as a mold below
histoplasmosis
most common respiratory disease caused by a fungus
histoplasmosis
the organism is most often found in the soil especially that contaminated with bird or bat droppings
histoplasmosis
transmitted via inhalation
histoplasmosis
sypmtomatic cases range from a mild respiratory infection with fever to a lethal disseminated infection (spread all over body)
histoplasmosis
most common in the mississippi, missouri, and ohio river valleys
candidiasis
caused candida albicans, a normal flora organism
candidiasis
causes thrush or vaginal yeast infections (most often)
candidiasis
may also disseminate throughout the body where it settles in the lungs, can be fatal
cryptococcosis
caused by cryptococcus neoformans
cryptococcosis
most often found in the soil especially that contaminated with pigeon droppings
cryptococcosis
affects the lungs first but then spreads to the central nervous system
cryptococcosis
causes a very deadly form of meningitis
cryptococcosis
a very serious condition in immunocompromised individuals
aspergillosis
caused by Aspergillus sp.
aspergillosis
common in decaying vegetation, particularly common in the agriculture industry
aspergillosis
the condition resembles tuberculosis and is often misdiagnosed
aspergillosis
again affects immunocompromised individuals most often
blastomycosis
caused by blastomyces dermatitidis
dimorphic organism; blastomycosis
grows as a mold in the soil and as a yeast in the tissue
blastomycosis
forms a lesion in the lung that is granulomitis and suppurative in nature
blastomycosis
also often misdiagnosed as tuberculosis
blastomycosis
if untreated, it rapidly proves fatal
dimorphic organism
grows as a mold in the soil and as a yeast in the tissue
protozoa
eukaryotic single celled animals
protozoa
may exist as free living organisms or as parasites of a living host
protozoa
differ from other parasites in that they are small enough to necessitate the use of a microscope where as the others are macroscopic
entamoeba histolytica
causes amoebias or amebic dysentery
entamoeba histolytica
most cases are asymptomatic
entamoeba histolytica
most common in developing countries with poor sanitation conditions
entamoeba histolytica
transmitted via the fecal oral route
entamoeba histolytica, cyst & vegetative
has two stages to its life cycle
entamoeba histolytica cyst stage
this is the form that is passed from the intestine and then re introduced into another host
entamoeba histolytica; a vegetative stage (trophozoite)
this is the stage that occurs in the intestines of the host
entamoeba histolytica; a vegetative stage (trophozoite)
feeds on the contents of the intestine as well as the tissue of the intestinal wall
entamoeba histolytica; a vegetative stage (trophozoite)
this is what leads to the symptoms of amoebiasis
symptoms of amoebiasis
abdominal pain, fever, bloody mucoid stool
entamoeba histolytica
may spread to other parts of the body, affects most commonly the liver
giardia lamblia
caused giadiases
giardia lamblia; giadiases
a common gastrointestinal disturbance
giardia lamblia; giadiases
transmitted in water contaminated with fecal matter from an infected individual or by person to person contact
giardia lamblia; giadiases
the ladder occurs often in institutional settings like daycare centers and nursing homes
giardia lamblia; giadiases
capers and hikers tend to be at heightend risks
giardia lamblia; giadiases
has a cyst stage and a trophozoite stage
giadia lamblia; giadiases symptoms
diahrrea, foul greasy stools, abdominal cramps, increased gas, blooding, weakness, weight loss
plasmodium malarie
causes malaria
plasmodium malarie
transmitted to humans via the bite of an infected anopheles(mosquito)
plasmodium malarie
has a multiple life cycle
plasmodium malarie
reproduces asecually in humans, secually in the salivary glands of a mosquito, is then passed back and forth between the two
plasmodium malarie
the protozoa localize in the erythrocytes of the human host, causes their destruction, possbile to the point of anemia (seconday)
plasmodium malarie
the disease is characterized by alternating period of chills and fever
plasmodium malarie
once attempted to control the disease by controlling the mosquito vector with insecticides
pneumocystis carinii
caused pneumocystis pneumoniae
pneumocystis carinii
this is not a pathogen of healthy humans
pneumocystis carinii
affects ONLY immunocompromised individuals
pneumocystis carinii
characterized by fever, non productive cough and shortness of breathe.
pneumocystis carinii
can lead to death by respiratory failure
pneumocystis carinii
often seen as a determining factor for an aids diagnosis
toxoplasma gondii
causes toxoplasmosis
toxoplasmosis
infections of the eye and brain in immunocompromised individuals
toxoplasma gondii
asymptomatic in most other cases, transmitted in two ways
toxoplasma gondii transmission
by eating meat that contains tissue cyst; by ingesting 'oo' cysts that have been excreted by an infected cat
trichinella sporalis
causes trichanosis
trichanosis
an intestinal disturbance while the worms are still in the intestine
intestinal distubance of worms in the intestine
nausea, diarrhea, vomitting, fatigue, fever, and abdominal discomfort
systemic infection as worms encyst in other areas of the body
headaches, fevers, chills, cough, eye swelling, aching joints, and muscle pains, pinpoint hemorrhages, itchy skin, and heightened numbers of wbc's
trichinella sporalis; trichanosis
transmitted by eating under cooked meat usually pork that is contaminated w/ cysts containing worms
trichinella sporalis; trichanosis
the worms survive by invading a cell and using the cell much like a virus
trichinella sporalis; trichanosis
occurs mainly in muscle cells
molds
reproduce by conidia and zygote formation
molds
reproduce sexually and asexually
Coccidioidomycosis
Dessemination to the entire body often leads to a form of meningitis
asexual
Is reproduction by conidia sexual or asexual?
sexual
Is reproduction by zygote formation sexual or asexual
Aspergillosis - Blastomycosis
Resembles tuberculosis.(2)
Histoplasmosis
asymptomatic in most cases but symptomatic cases range from a mild respiratory infection with fever to a lethal disseminated infection