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

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