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BIOL 4092 - Parasitology Lab > Exam 3 -- Protozoa 2 > Flashcards

Exam 3 -- Protozoa 2 Flashcards

1
Q

What is the vector for Trypanosoma brucei gambiense? And Trypanosoma brucei rhodesiense?

A

Tsetse fly (female and male) for both

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2
Q

What disease can Trypanosoma brucei rhodesiense cause?

A

Acute… Fatal.

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3
Q

What disease can Trypanosoma brucei gambiense cause?

A

Chronic… Sleeping sickness

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4
Q

What blood stage is Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?

A

trypomastigote

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5
Q

What is the tissue stage of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?

A

N/A

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6
Q

What is the vector stage of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?

A

epimastigoite

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7
Q

What binary fission occurs in Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?

A

Blood of the host and the vector

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8
Q

What is the life cycle of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?

A

Tsetse fly takes blood and inject trypomastigote -> In the host blood, they multiply to produce more trypomastigote -> Tsetse fly takes blood meal with trypomastigote -> In the fly, trypomastigote transforms into epimastigote -> Multiply -> Trypomastigote (ready for new host)

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9
Q

What is the vector of the Trypanosoma cruzi? Where is this found?

A

Kissing bug (through the feces to open wound)

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10
Q

What is the disease is caused by Trypanosoma cruzi?

A

Chagas disease; cardiac form; colonmegaly (digestive system)

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11
Q

What is the blood stage of Trypanosoma cruzi?

A

Trypomastigote

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12
Q

What is the tissue stage of Trypanosoma cruzi?

A

Amastigoite

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13
Q

What is the vector stage of Trypanosoma cruzi?

A

Epimastigoite

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14
Q

Where does binary fission occur in Trypanosoma cruzi?

A

In the tissues of the host and the vector.

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15
Q

What is the life cycle of Trypanosoma cruzi?

A

Kissing bug takes a blood meal and leaves trypomastigote within the feces on the host skin -> Invades tissue -> In the host tissues they multiply to produce more amastigote -> Transform into trypomastigote and go to the blood to another organ -> Kissing bug takes blood meal with trypomastigote -> In the fly trypomastigote transforms in epimastigote -> Multiply -> Trypomastigote -> (ready for the new host)

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16
Q

What is the vector of Leshmania donvani and Leshmani maxicana?

A

Female of sandfly

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17
Q

What is the disease caused by Leshmania donvani and Leshmani maxicana?

A

Kala-azar disease (hepatosplenomegaly)

18
Q

What is the blood stage of Leshmania donvani and Leshmani maxicana?

A

Promastigote

19
Q

What is the tissue stage of Leshmania donvani and Leshmani maxicana?

A

Amastigote (Macrophages)

20
Q

What is the vector stage of Leshmania donvani and Leshmani maxicana?

A

Promastigote

21
Q

What binary fission occurs in Leshmania donvani and Leshmani maxicana?

A

In the host macrophages and the vector.

22
Q

What is the life cycle of Leshmania?

A

Sandfly takes a blood meal and injects promastigote -? Invades macrophages and transform into amastigote -> In the host macrophages they multiply to produce more amastigote -> Transform into promastigote and go with the blood to another organ -> Sandfly takes blood meal with macrophages with amastigote -> In the fly, amastigote transforms into promastigote -> Multiply -> (Ready for the new host)

23
Q

What is the transmission path for Chilomastix mesnili?

A

The oro-fecal pathway from contaminated food/water

24
Q

Chilomastix mesnili moves by what mechanism?

A

Flagellum

25
Q

What are the trophozoite characteristics for Chilomastix mesnili?

A
  • Pyriform shape;
  • 3 anterior flagellum;
  • Cytostomal cleft
26
Q

What are the cyst characteristics of Chilomastix mesnili?

A

Lemon shape cap

27
Q

What is the pathogenicity of Chilomastix mesnili?

A

Harmless - up to diarrhea

28
Q

What is the transmission path of Giardia lamblia?

A

The oro-fecal pathway from contaminated food/water

29
Q

Giardia lamblia moves by what mechanism?

A

Flagellum

30
Q

What are the trophozoite characteristics for Giardia lamblia?

A
  • Tear drop shape; * 4 pairs of flagellum; * axostyle; * 2 nuclei
31
Q

What are the characteristics of the cyst for Giardia lamblia??

A
  • 4 nuclei;
  • axostyle;
  • infective stage
32
Q

What is the transmission path for Trichomonas vaginalis?

A

Sexual intercouse

33
Q

Trichomonas vaginalis moves by what mechanism?

A

Flagellum

34
Q

What are the trophozoite characteristics of Trichomonas vaginalis?

A
  • 4 anterior + 1 posterior undulating flagellum; * axostyle
35
Q

What are the cyst characteristics of Trichomonas vaginalis?

A

NO CYST

36
Q

What is the pathogenicity of Trichomonas vaginalis?

A
  • Asymptomatic itching/discomfort of prostatitis; * Vaginal discharges
37
Q

What is the transmission path for Dientamoeba fragilis?

A

1- Oro-fecal pathway from contaminated food/water with trophozoite; 2- Trophozoite along with Ascaris or vermicularis eggs (hyper parasitized)

38
Q

Dientamoeba fragilis moves by what mechanism?

A

Pseudopodia

39
Q

What are the trophozoites characteristics of Dientamoeba fragilis?

A

1 or 2 nuclei (mostly) that are bound by the mitotic spindle.

40
Q

What are the cyst characteristics of Dientamoeba fragilis?

A

NO CYST

41
Q

What is the pathogenicity of Dientamoeba fragilis?

A

Harmless - up to diarrhea

BIOL 4092 - Parasitology Lab (11 decks)

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