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60 Cards in this Set
- Front
- Back
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Infections caused by coccidians in immunocompetent individuals |
None |
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Coccidians are motile organisms |
False |
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Coccidians are prevalent in? Tropical or subtropical countries? |
Both |
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All coccidians are obligate intracellular organisms |
True |
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Identify (Specific) |
Immature oocyst, 2 sporoblast |
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Habitat in humans |
Small intestine |
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Identify disease caused |
Chronic non-bloody diarrhea |
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Sexual stage occurs in? |
Environment |
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Mode of transmission of organism |
Fecal-oral |
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Identify (Specific) |
Immature oocyst, 1 sporoblast |
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Identify stage and contents |
Schizont; merozoites |
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Gametocytes of this organism is found in? |
Humans |
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Identify and indicate associated organism |
Charcot-leyden crystal; Isospora belli |
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This organism is immediately infective after passing from stool |
False |
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What organism is identified by this method |
Isospora belli |
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Stain used to identify organism |
Acid fast stain |
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Identify (Specific) |
Mature oocyst, 2 sporocyst, 4 sporozoites each |
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Identify sexual and asexual cycle |
Sporogony; Schizogony |
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Humans are the only host? |
True |
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Identify organism that presents with this finding in peripheral blood smear |
Isospora belli
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Characteristic shape of oocyst |
Doughnut or round-shaped |
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Identify organism |
Cryptosporidium (hominis and parvum) |
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Identify diagnostic stage and sample |
Immature oocyst in stool |
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Specific habitat of organism |
Small intestine, intracellular and extracytoplasmic |
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Mode of tranmission of organism |
Fecal-oral |
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Mechanism of sheather's sugar solution |
Ova float while fecal debris sink (1.27 gravity) |
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How many merozoites in the initial infection if this organism? |
8 |
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Solution used in the diagnosis of this organism |
Sheather's sugar solution |
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Staining method for the diagnosis of this organism |
Acid fast |
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Infective and diagnostic stage |
Thick-walled oocyst |
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How many sporozites in the infective stage of this organism |
4 |
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Cause of autoinfection |
Thin-walled oocyst |
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Infective stage of this organism in humans |
Bradyzoites |
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Role of humans in this organism |
Definitive host (Gametogony) |
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How many sporozoites in the infective form of this orfanism |
8 ( 4 sporozoites for each of the 2 sporocysts) |
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Where does schizogony occur in this organism |
Artery (Herbivores) |
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Acid fast stainign can be used for the diagnosis of this organism |
False |
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Infective stage of this organism in herbivores |
Thick-walled oocyst |
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Identify organism |
Sarcocystis |
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What stage of this organism is found in muscles of herbivores |
Cyst |
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Definitive hosts of this organism |
Humans and carnivores |
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Mode of transmission of this organism |
Raw meat |
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Disease caused by organism |
Self-limited diarrhea |
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Identify organism |
Toxoplasma gondii |
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Identify stage of organism |
Tachyzoites |
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Intermediate host of this organism |
Herbivores and omnivores |
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Two species of this organism wherein humans are definitive hosts |
hominis and suihominis |
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Identify stage of organism |
Mature oocyst, 2 sporocysts with 4 sporozoites each |
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Identify stage |
Bradyzoite |
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Characterized by rapid multiplication |
True |
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Characterized by slow multiplication |
True |
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What stage of this organism crosses the placenta |
Tachyzoites |
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What stage of this organism is present in the brain |
Bradyzoites |
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Definitive host of this organism |
Cats |
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Effect of this disease in the central nervous system |
Disrupt fear center |
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Infective stage of this organism |
Sporozoites (Mature cyst) |
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Role of humans for this organism |
Accidental host |
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Transmitted stage of organism in raw meat |
Bradyzoites |
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Transmitted stage of organism in feces |
Mature oocyst |
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This organism is transmitted through the blood |
True |
