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PARASITOLOGY > Flagella laboratory > Flashcards

Flagella laboratory Flashcards

1
Q

Description for G. lamblia troph

A
  • Rounded anteriorly and tapering at the posterior end (pearshaped)
  • Bilaterally symmetrical
    -resembles old man’s eyeglass
  • with sucking disc
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2
Q

How many pairs of flagella have?

A

4 pairs (8 flagella)

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3
Q

motility of g. lamblia troph

A

falling leaf motiin

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4
Q

g. lamblia no. of nuclei troph

A

binucleated (2) central

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5
Q

descrip of g. lamblia cyst

A

oval, double walled organism

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6
Q

g lamblia cyst no. of nuclei?

A

2-4 nuclei

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7
Q

Diagnosis of giardia lamblia

A

Stool examination

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8
Q

Chilomastix mesnili trophozoite description:

A
  • Asymmetrically pearshaped
  • w/ very prominent spiral groove( mouth part)
    -w/cytosome (not visible unless OIO)
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9
Q

chilomastix mesnili: how many flagella?

A

3

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10
Q

motility of chilomastix mesnili?

A

corkscrew movement

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11
Q

No. of nuclei of chilomastix mesnili

A

mononucleated (1)

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12
Q

chilomastix mesnili cyst descript.

A
  • Lemon shaped cyst
  • With nipple-like projection
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13
Q

No. of nuclei in d. fragilis?

A

binucleated (2) with fragmented karyosome (granules)

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14
Q

locomotory organelle for d. fragilis troph?

A

blunt pseudopodia

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15
Q

motility of d. fragilis?

A

sluggish, nondirectional

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15
Q

motility of d. fragilis?

A

sluggish, nondirectional

16
Q

Infective stage of d. fragilis?

A

Trophozoite stage, no cyst stage

17
Q

Trichonomas sp. how many flagella?

A

3-5 flagella

18
Q

description of trichonmas species

A
  • Only in trophozoite stage
  • Have rounded anterior end and somewhat pointed posterior end
  • w/ 3 – 5 flagella anteriorly
  • Curved, rigid axostyle arise near the median anterior pole extending through the entire body
  • Small cytosome on one side of the anterior end is observed
  • with blepharoplast between the nucleus and the anterior margin –à arises 3-5 flagella and a marginal flagellum on an undulating membrane, the base attachment being a heavy costa
19
Q

T. hominis

A

Habitat: Intestine Size: Medium Pathogenicity: commensal Specimen for diagnosis: stool T. tenax

20
Q

T. tenax

A

Habitat: oral cavity
Size: small
Pathogenicity: commensal Specimen for diagnosis: oral scrappings

21
Q

T. Vaginalis

A

Habitat: genitalia
Size: large
Pathogenicity: may cause UTI
Specimen for diagnosis: urine, semen, genital secretions

22
Q

measurement of t. vaginalis

A

15-20 micron (biggest)

23
Q

description of t. vaginalis

A
  • Pyriform in shape with cytosome
  • Prominent axostyle
    Undulating membrane with a marginal flagellum
24
Q

how many flagella ?

A

4 sub-equal anterior flagella

25
Q

no of nuclei t. vaginalis

A

(1) Single nucleus at the anterior portion

26
Q

motility of t. vaginalis

A

fast and jerky tumbling movement

27
Q

infective stage of t. vaginalis

A

trophozoite

27
Q

t. vaginalis direct transmitted through

A

sexual intercouse

28
Q

T. vaginalis: reservoir

A

female

28
Q

T. vaginalis: carrier of the parasite

A

Man

29
Q

what does t. vaginalis causes?

A

pingpong disease

30
Q

Sign and symptoms of t. vaginalis

A

creamy “Leukorrheic discharge” genitalia irritations

31
Q

Diagnosis of t. vaginalis

A

urinalysis

32
Q

Treatment for t. vaginalis

A

Both the sexual partners should be treated to avoid prompt reinfection
− Sexual intercourse during treatment should be avoided
− Oral METRONIDAZOLE – drug of choice 250mg 3x/day

PARASITOLOGY (5 decks)

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