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Medical Parasitology [Undergraduate] > Exam 1 > Flashcards

Exam 1 Flashcards

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USMLE® Step 1 flashcards
1
Q

ID the organism and stage

A

B. coli

Trophozoite

*hint: macronucleus

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2
Q

ID the organism and stage

A

E. gingivalis

Trophozoite

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3
Q

Provide classification for:

Naegleria Fowleri Trophozoite

A
  • 10-15 um
  • 1 nucleus w/ halo
  • Blunt pseudopoda [move fast]
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4
Q

ID the organism and stage

A

Endolimax nana

Trophozoite

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5
Q

ID this organism and its stage

A

E. hartmanni

Trophozoite

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6
Q

Main source of infection is the cyst-passing, asymptomatic carrier or chronic (persistence) patient. Infection in such individuals is called ___________ or chronic amoebiasis

A

luminar

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7
Q

ID the organism and stage

A

E. polecki

Cyst

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8
Q

ID the organism and stage

A

E. coli

Trophozoite

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9
Q

ID the organism and stage

A

Iodamoeba buetschlii

Trophozoite

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10
Q

Provide classification for:

E. Histolytica Trophozoite

A
  • 20-30 um
  • 1 well-defined nucleus w/ endosome (halo appearance)
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11
Q

ID the organism and stage

A

Endolimax nana

Cyst

*small size and up to 4 nuclei

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12
Q

As cyst matures, the _______ _______and _______ _______ disappear

A

glycogen vacuole

chromatoidal bodies

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13
Q

ID the organism and stage

A

B. coli

Troph

*oval shape, curved macronucleus, food vacuoles

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14
Q

ID the organism and stage

A

E. polecki

Cyst

*tiny endosome, blunt chrom. bars

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15
Q

ID the organism and stage

A

Endolimax nana

Cyst

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16
Q

ID the organism and stage

A

E. polecki

Trophozoite

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17
Q

Provide classification for:

E. Hartmanni Trophozoite

A
  • 12-15 um
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18
Q

What are the 3 forms of Amoebiasis for E. histolytica?

A
  • Hepatic
  • Pulmonary
  • Secondary :
    • brain, heart, spleen
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19
Q

ID the organism and stage

A

Endolimax nana

Cyst

*small size and up to 4 nuclei

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20
Q

Provide classification for:

E. polecki Cyst

A
  • 11-15 um
  • 1 nucleus with tiny endosome
  • Blunt chromatoidal bars

*2 nucleus is very rare*

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21
Q

ID the organism and stage

A

E. gingivalis

Troph

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22
Q

ID the organism and stage

A

Endolimax nana

Trophozoite

*tiny, vesicular nucleus with prominent endosome

23
Q

Provide classification for:

Endolimax Nana Trophozoite

A
  • 6-15 um
  • Tiny, vesicular nucleus
  • Large endosome
24
Q

ID the organism and stage

A

Iodamoeba butschlii

Cyst

*oval shape, large glycogen-filled vacuole

25
Q

ID the organism and stage

A

E. gingivalis

Trophozoite

26
Q

ID the organism and stage

A

E. coli

Cyst

27
Q

Provide classification for:

Acanthamoeba Trophozoite

A
  • 25-40 um
  • Nucleus w/ halo
  • Spiky pseudopoda [move slow]
28
Q

ID the organism and stage

A

E. histolytica

Cyst

29
Q

Provide classification for:

B. coli Trophozoite

A
  • 50-130 um
  • Macronucleus
  • 2 contractile vacuoles
  • Pellicle under membrane
  • Organism is more pointed at one end
30
Q

ID the organism and stage

A

Endolimax nana

Cyst

31
Q

Provide classification for:

Iodamoeba Buetshlii Trophozoite

A
  • 5-18 um
  • Large nucleus with Large prominent endosome
32
Q

ID the organism and stage

A

B. coli

Cyst

33
Q

Provide classification for:

E. coli Trophozoite

A
  • 10-33 um
  • 8 nuclei
  • pointed bars
34
Q

ID the organism and stage

A

E. hartmanni

Cyst

35
Q

2 types of pseudopods?

A
  • lobopod
  • filopodia
36
Q

ID the organism and stage

A

E. gingivalis

Troph

*may appear with RBC as well

37
Q

ID the organism and stage

A

E. polecki

Cyst

*tiny endosome, blunt chrom. bars

38
Q

ID the organism and stage

A

Iodamoeb buetschlii

Cyst

39
Q

ID the organism and stage

A

Endolimax nana

Trophozoite

40
Q

ID the organism and stage

A

B. coli

Cyst

*round shape, large curved macronucleus, cyst wall

41
Q

ID the organism and stage

A

E. histolytica

Trophozoite

42
Q

Trophozoites multiply by ________ __________ within the human’s gut. Numbers can bulidup very rapidly

A

binary fission

43
Q

Provide classification for:

E. Gingivalis Trophozoite

A
  • 10-20 um
  • Numerous blunt pseudopoda
  • Small endosome
  • Food vacuoles
44
Q

ID the organism and stage

A

E. coli

Cyst

45
Q

ID the organism and stage

A

Iodamoeba butschlii

Troph

*prominent nuclear endosome, numerous cytoplasmic vacuoles

46
Q

For the Organism, provide: Size + Features

E. histolytica Cyst

A
  • 10-20 um
  • 4 nuclei
  • Round chromatoidal bars
47
Q

For the Organism, provide: Size + Features

E. coli cyst

What environment?

A
  • 10-33 um
  • 8 nuclei
  • Pointed chromatoidal bars
  • Rotten
48
Q

For the Organism, provide: Size + Features

Endolimax nana cyst

(except size)

What enviornment?

A
  • n/a
  • 4 nuclei
  • No chromatoidal bars
  • Oval cell
  • Intestine
49
Q

For the Organism, provide: Size + Features

E. hartmanni cyst

(size only)

A
  • 5-9 um
50
Q

For the Organism, provide: Size + Features

E. polecki cyst

What enviornment?

A
  • 11-15 um
  • 1 nucleus
  • Tiny endosome
  • Blunt chromatoidal bars
  • Pig, monkey, human
51
Q

Iodamoeba Butschlii cyst

(except size)

What environment?

A
  • Large glycogen vacuole
  • Intestine of pig/primate
52
Q

For the Organism, provide: Size + Features

Naegleria fowleri cyst

What enviornment?

A
  • 8-12 um
  • Free-living or CNS via olfactory nerve
53
Q

For the Organism, provide: Size + Features

Acanthamoeba cyst

What enviornment?

A
  • 15-20 um
  • Double wall
  • Polygonal or spherical
  • Free-living or Brain/eye
54
Q

For the Organism, provide: Size + Features

B. coli cyst

What enviornment?

A
  • 40-60 um
  • contractile vacuole
  • “double membrane”
  • Intestine of human + others

Medical Parasitology [Undergraduate] (6 decks)

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