Trypanosoma, Leishmania, Giardia, Trichomonas, Histomonas Flashcards

1
Q

Which diagnostic methods are used to detect the presence of trypanosomes in dried blood smears?

A

Giemsa

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2
Q

What is the main difference between the detection of intestinal trichomonas or Giardia infection?

A

Giardia turn to cyst, trichomonas does not

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3
Q
What is found in giardiasis?
A: Trypomastigotes
B: Promastigotes
C: Oocytes
D: Others
A

D Others

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4
Q

What is an adequate method to detect Giardia cysts in the fresh feces?

A

Flotation

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5
Q
Which forms of Thrichomonas can be found in the outer environment?
A: Cyst 
B: Flagellated 
C: Ameboid 
D: Not any forms
A

D: Not any forms

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6
Q

Which is the non-cyclic Trypanosoma species among the next ones?

A

T. evansi

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7
Q

Which morphological form of the Leishmania can be found in the vertebrate?

A

Amastigote

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8
Q

What are the morphs of leishmanias that appear in macrophages?

A

Amastigotes

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9
Q

What species are susceptible for the disease of “mal de caderas”?

A

Horse and donkey

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10
Q

What is the Trypanosoma that infects host without vectors?

A

T equiperdum

veneral transmission

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11
Q

How many flagellums does a Giardia trophozite have?

A

Eight

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12
Q

Which method of staining can be applied to detect Histomonas in tissues?

A

PAS

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13
Q

Which is the largest causative agent of Nagan?

A

T. brucei brucei

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14
Q

Most frequent cause of death in Nagana?

A

Heart failure

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15
Q

Which species does the causative agent of dourine belong to?

A

T equiperdum

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16
Q

Name of parasite found in closely related species

A

Stenoxenous

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17
Q

Which has cutaneous and visceral forms?

A

Leishmaniasis

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18
Q

What is the animal obligatory for the completion of the life cycle?

A

Definitive host

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19
Q

Parasite of cycle involves one host?

A

Monoxenous

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20
Q

Which does not cause Nagana?

A

T. equiperdum

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21
Q

Which cysts can be found in the faeces of the animal?

A

Giardiasis

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22
Q

Which is monomorphic

A

T vivax

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23
Q

How do the clinical signs of Dourine follow eachother?

A

Genital– skin– nerves

24
Q

Which host is not needed to complete the life cycle?

A

Paratenic host

25
Test used in Dourine?
Complement fixation test
26
Which animal has the generalized form of histomonosis
Guinea fowl
27
What is the name of Trichomoniasis species found in cattle?
Tritrichomonas foetus
28
Parasite that can only be established in one host?
Stenoxenous
29
Can be detected in giardiasis?
Trophozoites
30
Which is not zoonotic?
Histomonosis
31
Flagellate form can be found in the caecal lumen?
Histomonosis
32
Who is pleomorphic?
T. brucei
33
In which faecal sample can you find cysts?
Giardiasis
34
What can you find in the blood smear of dourine?
Trypomastigotes
35
Which of these parasites can infect more than one host?
Euryxenous
36
Which species is found in old/new world America?
T vivax
37
What is the vector of leishmaniasis?
Sandfly | Phlebotomine sp
38
What is the vector of nagana?
Tsetse fly (+stomoxys and tabanus)
39
Whatis the number of nuclei in infected cysts of entamoebosis?
4
40
What can be detected in leishmaniasis?
Amastigotes
41
Which form of Histomonas is found in the caecum?
Flagellate
42
Which Trypanosoma needs a mechanical vector?
T. evansi
43
What species is primarily affected by Histomonas meleagridis?
Turkey
44
Which parasite species causes Black head?
Histomonas meleagridis
45
Which is the clinical form of leishmaniasis in dogs?
Cutaneous form
46
How do you detect leishmaniasis?
Smear- giemsa staining | Detection of amastigotes
47
Which test can you use to detect Dourine?
Complement fixation test, perform twice with 3 week intervals
48
Cellular organelle of leishmaniasis consists of?
Nucleus Kinetoplast Axoneme or basal body
49
Which species is primarily affected by Histomonas meleagridis?
Turkey: 3-12 wks
50
Which parasites are pleomorphic?
T. brucei | Histomonas meleagridis
51
What can we detect in giardiasis?
Faecal smear Trophozoites (vegetative form) Cysts (infectious form)
52
Which cells carry leishmaniasis?
Macrophages
53
Which trypanosome is not involved in nagana?
T. brucei | T. evansi
54
Which cellular organelle is present in Trypanosoma?
Kinetoplast
55
Which parasite release cysts into the faeces of animals?
Giardia duodenalis
56
What is the mechanical vector of nagana?
Stomoxys | Tabanus