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?

25
What are the trophozoite characteristics for Chilomastix mesnili?
* Pyriform shape; * 3 anterior flagellum; * Cytostomal cleft
26
What are the cyst characteristics of Chilomastix mesnili?
Lemon shape cap
27
What is the pathogenicity of Chilomastix mesnili?
Harmless - up to diarrhea
28
What is the transmission path of Giardia lamblia?
The oro-fecal pathway from contaminated food/water
29
Giardia lamblia moves by what mechanism?
Flagellum
30
What are the trophozoite characteristics for Giardia lamblia?
* Tear drop shape; * 4 pairs of flagellum; * axostyle; * 2 nuclei
31
What are the characteristics of the cyst for Giardia lamblia??
* 4 nuclei; * axostyle; * infective stage
32
What is the transmission path for Trichomonas vaginalis?
Sexual intercouse
33
Trichomonas vaginalis moves by what mechanism?
Flagellum
34
What are the trophozoite characteristics of Trichomonas vaginalis?
* 4 anterior + 1 posterior undulating flagellum; * axostyle
35
What are the cyst characteristics of Trichomonas vaginalis?
NO CYST
36
What is the pathogenicity of Trichomonas vaginalis?
* Asymptomatic itching/discomfort of prostatitis; * Vaginal discharges
37
What is the transmission path for Dientamoeba fragilis?
1- Oro-fecal pathway from contaminated food/water with trophozoite; 2- Trophozoite along with Ascaris or vermicularis eggs (hyper parasitized)
38
Dientamoeba fragilis moves by what mechanism?
Pseudopodia
39
What are the trophozoites characteristics of Dientamoeba fragilis?
1 or 2 nuclei (mostly) that are bound by the mitotic spindle.
40
What are the cyst characteristics of Dientamoeba fragilis?
NO CYST
41
What is the pathogenicity of Dientamoeba fragilis?
Harmless - up to diarrhea