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Parasitology > [Lab] Flagellates Part 2 > Flashcards

[Lab] Flagellates Part 2 Flashcards

1
Q

Does the Trichomonas spp. have a cyst stage

A

No

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2
Q

True or false: Trichomonas spp. has a rounded anterior end and somewhat pointed
posterior end.

A

True

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3
Q

True or false: Trichomonas spp. has a straight and soft axostyle

A

False (curved and rigid)

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4
Q

True or false: Trichomonas spp. has a small cytostome on one side of the
anterior end.

A

True

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5
Q

Shape of nuclei of Trichomonas spp.

A

Spherical

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6
Q

Trichomonas spp. has a blepharoplast

A

Yes

Blepharoplast is present margin from which 3-5
flagella and a marginal flagellum on an undulating membrane, the base attachment being a heavy costa.

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7
Q

Size of T. vaginalis trophozoite

A

15-20

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8
Q

Shape of T. vaginalis trophozoite

A

Pyriform

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9
Q

True or false: the axostyle of T. vaginalis trophozoite is prominent

A

True

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10
Q

Number of flagella of T. vaginalis trophozoite

A

4 (all are anterior)

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11
Q

What will you see in the cytoplasm of T. vaginalis trophozoite

A

Siderophil granules

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12
Q

Motility of T. vaginalis trophozoite

A

Jerky (tumbling), fast

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13
Q

Where does the T. vaginalis live in a male host

A

Epithelium of the urethra, prostate gland

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14
Q

Where does the T. vaginalis live in a female host

A

Surface of vaginal epithelium

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15
Q

True or false: Male hosts of T. vaginalis are always symptomatic

A

False (usually asymptomatic carriers)

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16
Q

MOT of T. vaginalis

A
  1. Sexual intercourse
  2. Contaminated toilet seat and towel
17
Q

True or false: T. vaginalis is the only pathogenic Trichomonas

18
Q

Disease caused by T. vaginalis

A

Trichomoniasis

19
Q

Clinical manifestations of T. vaginalis

A
  1. Inflamed vaginal walls with petechial hemorrhage.
  2. Surface of the vaginal epithelium is covered with coagulated materials: leukocytes, RBC and Trichomonas
  3. Desquamation of the epithelial cells
  4. Cause non-specific urethritis, vaginitis and prostatitis.
20
Q

Signs and symptoms of Trichomoniasis

A
  1. Greenish yellow frothy vaginal
    discharge
  2. Intense itchiness of the vagina
  3. Burning sensation
  4. Strawberry cervix
21
Q

Technique/s used for the recovery of T. vaginalis

A
  1. Unstained saline wet preparation (TROPHOZOITE)
22
Q

Specimen of interest for T. vaginalis (male)

A

a. Semen
b. Prostatic secretions

23
Q

Specimen of interest for T. vaginalis (female)

A

a. Urine
b. Urethral discharges
c. Vaginal discharges
d. Cervical secretion

24
Q

Stains used for recovery of T. vaginalis

A
  1. Giemsa
  2. Pap’s
  3. Romanowsky
  4. Acridine Orange
25
Q

Culture media for T. vaginalis

A

a. Diamond’s modified medium
b. Feinberg and Whittington culture media
c. Cysteine Peptone Liver Maltose
d. Simplified Trypticase Serum

26
Q

Treatment for T. vaginalis

A
  1. Oral metronidazole (both sexes)
  2. Acid douche (females)
27
Q

Prevention and control for T. vaginalis

A
  1. Proper personal hygiene .
  2. Avoid promiscuous sexual intercourse.
  3. Protective devices such as condoms should be used.
28
Q

Size of T. tenax trophozoite

29
Q

No. of flagella of T. tenax trophozoite

30
Q

Does T. tenax have an undulating membrane

31
Q

Does T. tenax lack a free posterior extension

32
Q

T. tenax lives in

A

Oral cavity

33
Q

MOT of T. tenax

A

Droplet spray from the mouth (Kissing,
common use of contaminated dishes and drinking glasses)

34
Q

Lab diagnosis of T. tenax

A
  1. Swabbing the tartar between gingival margin of the
    gums or the tonsillar crypts.
  2. Direct examination of mouth scrapings.
35
Q

Size of T. hominis trophozoite

36
Q

No. of flagella of T. hominis trophozoite

A

5 (anterior)

37
Q

Where does T. hominis live

38
Q

MOT of T. hominis

A

Ingestion of contaminated food and water

Parasitology (4 decks)

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