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Parasitology, Lec > protozoa > Flashcards

protozoa Flashcards

1
Q

meaning of protos

A

first

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2
Q

meaning of zoon

A

animals

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3
Q

outer hyaline portion

A

ectoplasm

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4
Q

inner granular portion

A

endoplasm

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5
Q

the most pathogenic amoeba

A

entamoeba histolytica

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6
Q

infective stage of entamoeba histolytica

A

cyst

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7
Q

treatment of entamoeba histolytica

A

metronidazole

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8
Q

lab dx

A

stool (specimen)

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9
Q

how many nucleus does e histolytica have?

A

1-4 nuclei

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10
Q

how many nucleus does e coli have?

A

1-8 nuclei

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11
Q

sausage-shaped with rounded ends/cigar chaped (cyst)

A

e histolytica

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12
Q

broomstick like in appearance (cyst)

A

e coli

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13
Q

size of trophozoite of e histolytica

A

12-60 um

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14
Q

size of trophozoite of e coli

A

15-50 um

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15
Q

centrally located karyosome (nucleus of trophozoite)

A

e histolytica

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16
Q

eccentric (nucleus of trophozoite)

A

e coli

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17
Q

long and fingerlike (pseudopodia)

A

e histolytica

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18
Q

short, blunt (pseudopodia)

A

e coli

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19
Q

progressive and directional (locomotion)

A

e histolytica

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20
Q

non-progressive and sluggish (locomotion)

A

e coli

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21
Q

ingests rbc (cytoplasm)

A

e histolytica

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22
Q

bacteria, undigested food (cytolasm)

A

e coli

23
Q

its cytoplasm contains ingested wbc

A

e gingivalis

24
Q

there is no known cyst stage for this entamoeba

A

e gingivalis

25
Q

1st amoeba discovered in man

A

e gingivalis

26
Q

trophozoites are transmitted orally by kissing or fomites (such as eating utensils)

A

e gingivalis

27
Q

morphologically similar with e histolytica but with a different genome

A

e dispar

28
Q

spherical and usually measure 12 to 15 um

A

e dispar

29
Q

distinguished from e histolytica by pcr

A

e dispar

30
Q

their cysts are quadrinucleated with coarse cytoplasm

A

e hartmanni

31
Q

also known as “small race” amoeba

A

e hartmanni

32
Q

morphologically similar to e histolytica but smaller and no rbc inclusion

A

e hartmanni

33
Q

parasite of pigs and monkeys; rarely infect humans

A

entamoeba polecki

34
Q

distinguished from e histolytica by cyst

A

e polecki

35
Q

cysts are consistently uninucleated

A

e polecki

36
Q

smallest protozoa

A

endolimax nana

37
Q

classified as free-living entamoeba

A

e moshkovskii

38
Q

osmotolerant entamoeba

A

e moshkovskii

39
Q

has an iodine cyst

A

iodamoeba butschlii

40
Q

most common acanthamoeba spp

A

a castellani

41
Q

infective stage of a castellani

A

trophozoites

42
Q

generally related to destruction of brain tissue and the associated meningeal irritation

A

granulomatous amebic encephalitis (gae)

43
Q

associated with the use of improperly disinfected of soft contact lenses

A

acanthamoeba keratitis (ak)

44
Q

diagnosis for acanthamoeba keratitis

A

specimen discharges, epithelial biopsy and culture (with pygc medium antibiotics)

45
Q

meaning of pygc

A

peptone yeast glucose cysteine

46
Q

treatment for ak

A

surgical excision of the infected cornea, deep lamellar keratectomy

47
Q

antibiotics for ak

A

clotrimazole

48
Q

brain eating amoeba

A

naegleria fowleri

49
Q

diagnosis for naegleria fowleri

A

csf (presence of trophozoites), pcr and culture

50
Q

treatment for naegleria fowleri

A

amphotericin b with clotrimazole

51
Q

isolated from soil and dust

A

balamuthia mandrillaris

52
Q

mode of transmission b madrillaris

A

nasal and broken skin

53
Q

rarely isolated from human specimens

A

sappinia spp

Parasitology, Lec (13 decks)

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