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Parasitology (TS) > Parasitology Quiz 2 > Flashcards

Parasitology Quiz 2 Flashcards

1
Q

What animals is the trypomastigote form found of hemoflagellates?

A

mammalian hosts

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2
Q

What forms are found in the intermediate hosts of hemoflagellates?

A

epimastigote

metacyclic trypomastigote

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3
Q

What transforms into a promastigote form after ingestion by the intermediate host(sandfly)?

A

amastigote

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4
Q

What is a kinetoplast?

A

extension of mitochondria

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5
Q

What is the amastigote form consist of?

A

remnant of flagella

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6
Q

What disease is caused by trypanasomes in humans?

A

sleeping sickness

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7
Q

What disease is caused by Trypanasoma cruzi?

A

Chaga’s dz

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8
Q

What are the intermediate hosts of T. cruzi?

A

“kissing” bugs

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9
Q

What is a chagoma?

A

inflammatory lesion at site of infection of T. cruzi

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10
Q

What is Romana’s sign?

A

palpebral edema from rubbing T. cruzi in eye

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11
Q

How can T. cruzi be transferred between dogs?

A

transplacental and transmammary

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12
Q

What are signs of chronic infection with T. cruzi?

A

myocardial involvement

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13
Q

How is Chaga’s disease diagnosed?

A

blood smears, tissue culture, xenodiagnosis, ELISA, IFAT, RIPA, PCR, immunohistochemistry

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14
Q

What is xenodiagnosis?

A

diagnosis based on recovery of trypanosomes in bug that fed on animal

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15
Q

How is Trypanasoma equiperdum transmitted?

A

venereal

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16
Q

Should T. equiperdum be reported to state authorities?

A

yes!

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17
Q

What are clinical signs of T. equiperdum?

A

silver dollar plaques on rib skin that last 3 to 7 days

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18
Q

How is T. equiperdum treated?

A

euthanize

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19
Q

What are the 3 diseases caused by leishmania?

A

cutaneous
mucocutaneous
visceral leishmaniasis

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20
Q

What causes the diffuse cutaneous leishmaniasis?

A

immune mediated – immune complex deposition causes vasculitis, arthritis, thrombocytopenia

21
Q

What is the intermediate host for leishmania?

A

sand fly

22
Q

What is the montenegro test?

A

leishmania skin test

23
Q

What are the treatments for leishmania?

A

amphotericin B, antimony compounds, paromomycin

24
Q

What characterizes the phylum apicomplexa?

A

motile stages with apical complex

25
Q

What disease do intestinal apicomplexas cause?

A

coccidiosis

26
Q

What intestinal apicomplexa have zoonotic potential?

A

toxoplasma, sarcocystis, cryptosporidium

27
Q

what is a zoite?

A

a motile banana/cigar shaped cell (beginning and end point of life cycle)

28
Q

what is a sporozite?

A

infective forms that are found in sporulated oocysts

29
Q

What is a tachyzoite?

A

rapidly dividing zoite

30
Q

What are oocysts the result of?

A

union of microgametocyte and macrogametocyte

31
Q

What is schizogony (merogony)?

A

multiple internal fission

32
Q

What is a gametogony?

A

a merozite produced by the final schizogony then enters fresh cell

33
Q

What types of animals does eimeria and isospora cause problems in?

A

young animals

34
Q

What type of lifecycle does coccidia have?

A

direct

35
Q

What characterizes eimeria sporulated oocysts?

A

4 sporocysts with 2 sporozites each

36
Q

What do clinical signs coincide with what part of coccidia life cycle?

A

gametogony

37
Q

What are the clinical signs of winter coccidiosis?

A

bloody diarrhea, tenesmus, rectal prolapse

38
Q

What are the clinical signs of goat coccidiosis?

A

pasty green diarrhea

39
Q

What coccidia parasitizes the renal epithelium of horses and may be pathogenic?

A

Klossiella equi

40
Q

What are the clinical signs of avian coccidia?

A

diarrhea, reduced weight gain and egg production

41
Q

What species has a vaccine available for coccidia?

A

avian

42
Q

What form of coccidia do rabbits get?

A

liver

43
Q

What is the treatment for rabbit coccidia?

A

grave prognosis, sulfaquinoloxine and sanitation

44
Q

What characterizes cystoisospora sporulated oocysts?

A

2 sporocysts, each with 4 sporozoites

45
Q

What are the exceptions to the direct life cycle of cystoisospora?

A

extraintestinal stages in paratenic hosts

exraintestinal stages in dog, cats and humans

46
Q

What species causes coccidiosis in pigs? At what age?

A

Isospora suis

neonatal piglets - nursing

47
Q

What is the treatment for swine coccidiosis?

A

labor intensive

48
Q

What are the clinical signs of coccidiosis in piglets?

A

pasty to fluid diarrhea

villous atrophy

Parasitology (TS) (10 decks)

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