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Ameba Flashcards

1
Q

From cyst to trophozoite

A

Excystation

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2
Q

Often referred to as false feet which allows ameba to move within their environment

A

Pseudopods

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3
Q

Morphologic forms in the amebic life cycle

A

Trophozoites

Cysts

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4
Q

The nonfeeding stage characterized by a thick protective cell wall designed to protect the parasite from the harsh outside environment when deemed necessary

A

Cysts

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5
Q

Characteristically delicate and fragile and, because of their ability to produce and use pseudopods, motile

A

Trophozoites

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6
Q

From trophozoite to cyst

A

Encystation

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7
Q

Only ameba considered to be pathogenic

A

E. Histolytica

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8
Q

Lowest form of animals

A

Protozoan

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9
Q

E. Histolytica motility

A

Unidirectional

Finger like

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10
Q

Morphologically identical to E. Histolytica

A

E. Dispar

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11
Q

Dirty looking trophozoite

A

E. Coli

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13
Q

1st ameba recovered from a human specimen

A

Entamoeba gingivalis

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14
Q

This characteristic differentiate E. Histolytica from E. Hartmanni

A

Size

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17
Q

Small races of E. Histolytica

A

E. Hartmanni

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18
Q

Most common commensal

A

Entamoeba coli

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19
Q

Motility of E. Coli

A

Explosive

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20
Q

Parasites of pig and monkey

A

E. Polecki

21
Q

Smallest ameba

A

Endolimax nana

22
Q

Presence means fecal contamination of water supply

23
Q

With ingested WBC

A

Entamoeba gingivalis

24
Q

Motility of flagellate forms of N. Fowleri

A

Jerky or spinning motility

25
Q

The form that feeds, multiplies, and possesses pseudopods

A

Trophozoites

26
Q

Cross eyed karyosome

A

Endolimax nana

27
Q

Recovered in patients suffering from pyorrhea alveolaris

A

Entamoeba gingivalis

28
Q

It has witch broom chromatid bars

29
Q

MOT of Naegleria fowleri

A

Swimming in contaminated water

32
Q

Risks of Acanthamoeba

A

Contact lens user

33
Q

Free living amoeba

A

Naegleria fowleri

34
Q

Acanthamoeba causes

A

Granulomatous amebic encephalitis

Acanthamoeba keratitis

35
Q

Stains well with iodine

A

Iodameba butschlii

36
Q

Specimen of choice foe Entamoeba gingivalis

A

Mouth scrapings

37
Q

Ameba with ingested RBC

A

E. Histolytica

38
Q

With spiny filaments

A

Acanthamoeba spp

39
Q

Specimen of choice for N. Fowleri

40
Q

No cyst stage

A

Entamoeba gingivalis

41
Q

MOT of Acanthamoeba

A

Aspiration or inhalation

Direct invasion in the eyes

42
Q

Pathology of Naegleria fowleri

A

Primary amebic meningoencephalitis

44
Q

Entire life cycle of Zn. Fowleri occurs in

A

External environment

46
Q

Well defined glycogen mass

A

Iodamoeba butschlii

47
Q

How many nucleus are present in E. Coli cyst form

50
Q

Only ameba with 3 morphologic forms

A

Naegleria fowleri

Parasitology (9 decks)

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