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Parasitology > Protozoans > Flashcards

Protozoans Flashcards

1
Q

Survives at cold temps 0-40C

A

Entamoeba moshkovskii

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2
Q

Small race of E. histolytica

A

Entamoeba hartmanni

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3
Q

Iodine stains large glycogen body dark brown

A

Iodamoeba butschlii

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4
Q

Food vacuoles has ingested leukocytes

A

Entamoeba gingivalis

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5
Q

Cyst form has 8 nucleus, iodine stains glycogen

A

Entamoeba coli

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6
Q

Morphologically similar to E. histolytica but different DNA and ribosomal RNA

A

Entamoeba dispar

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7
Q

Only amoeba with no cyst form

A

Entamoeba gingivalis

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8
Q

Dx for cyst stage

A

Formalin ether/ethyl acetate concentration test, zinc sulfate floatation

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9
Q

Merthiolate iodine formalin, more sensitive conc method for

A

E. histolytica

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10
Q

Found on pigs and monkeys, with angular or pointed chromatioidal bars

A

Entamoeba poleckii

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11
Q

Identical to Entamoeba poleckii and can be differentiated by isoenzyme analysis

A

Entamoeba chatonni

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12
Q

Causes amebic liver abscess and colitis

A

E. histolytica

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13
Q

Quadrinucleated, cigar shaped chromatoid bodies

A

E. histolytica

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14
Q

Diagnostic for E. histolytica

A

Ingested RBC, hematophagous

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15
Q

Thermophilic true pathogen

A

Naegleria fowleri

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16
Q

Disease caused by Naegleria fowleri

A

Primary Amebic meningoencephalitis

17
Q

N. fowleri trophozoite infects penetrates

A

Penetrates the nasal mucosa and via olfactory nerves to the brain

18
Q

Morphology of Acanthamoeba spp

A

Acanthopodia = spiny filaments/thorn like

19
Q

Acanthamoeba spp is a possible reservoir for

A

Begionella, mycobacteria, G- bacilli

20
Q

Diseases caused by Acanthamoeba spp

A

Acathamoeba keratitis and Granulomatous amebic encephalitis

21
Q

Dx for Acanthamoeba spp

A

epithelial biopsy and corneal scrapings

22
Q

Trophozoite with progressive directional movement with ingested RBC

A

E. histolytica

23
Q

Naegleria fowleri morphology

A

Blunt, lobose pseudopodia and directional motility

24
Q

Naegleria fowleri trophozoites are found in

A

CSF and tissue

25
Q

Form of Naegleria fowleri not found in brain tissue

A

cyst form

26
Q

Naegleria fowleri flagellate form are found in

A

CSF

27
Q

Has suppressor factor that suppresses respiratory burst and nitric oxide production

A

E. histolytica

28
Q

Function of suppressor factor of E. histolytica

A

inhibit movement of monocytes and complement assemly

Parasitology (1 decks)

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