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protozoology > Sarcocystis > Flashcards

Sarcocystis Flashcards

0
Q

asexual stages occur in ________ host which is often __________

A

intermediate

prey animal

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1
Q

Sarcocystis is Heteroxenous T or F

A

True

becuase they have more than 1 kind of host

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2
Q

sexual stages develop in __________ host which is _________

A

definitive host

carnivorous(predator)

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3
Q

_________ is terminal asexual stage

A

sarcocyst(similar to schizont)

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4
Q

sarcocyst in presen in ___________ of IH

A

striated muscles

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5
Q

sarcocysts are of two types i.e.

A

macroscopic

microscopic

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6
Q

macroscopic sarcocyst(>1mm) are found in _________

A

S. cruzi of cattle-dog cycle

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7
Q

microscopic sarcocyst(<1mm) is seen in _________

A

S. fusiformis of buffalo-cat cycle

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8
Q

immature sarcocyst contain globular parasites called __________

A

metrocytes(mother cells)

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9
Q

metrocytes produce banana shaped _________ throught the process of ___________

A

bradyzoites

endodyogeny

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10
Q

________ are located in cortex of sarcocyst & ________ in medulla

A

metrocytes

bradyzoites

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11
Q

Sarcocystis are more host specific fo IH or DH

A

IH

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12
Q

the only Sarcocystis species trasnmissible to dogs, which is transmitted to cats in __________

A

S. cruzi

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13
Q

on ingestion if sarcocyst by DH, ________ is liberated in its intestine

A

bradyzoites

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14
Q

bradyzoites develop into _______ & ________ in ratio if ______

A

macrogamont
microgamont
95:5

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15
Q

gametogonic stages develop in which cells?

A

goblet cells

entericytes

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16
Q

oocysts sporulate in external enviroment or DH

A

in lamina propria of DH

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17
Q

oocyst are shed between ____& ____ weeks after ingestion of sarcocyst

A

1-2 weeks

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18
Q

sarcocysts are formed from what?

A

merozoites liberated from 2nd generation schizonts develop into sarcocyst in striated muscles

19
Q

each sporulated oocyst of Sarcocystis is
_________sporocystic
_________sporozoic

A

BIsporocystic
TETRAsporozoic

similar to Isospora

20
Q

IH become infected by ingesting __________

A

sporocyst

21
Q

sporozoites develop into schizonts in __________ part of body

A

endothelial cells of blood vessels of organs

22
Q

1st gen. schizonts are harmful or 2nd gen. schizonts

A

2nd generation schizonts

23
Q

sarcocysts formation occur in _______ part of body

A

striated muscles

24
Q

microsarcocyst belong to those species in which DH is ____________

A

canids/humans

25
Q

macrosarcocyst belong to those species in which DH is _________

A

felids

26
Q

name the three species of Sarcocystis in cattle

A

S. cruzi(cattle-DOG)
S. hirsuta(cattle-CAT)
S. hominis(cattle-MAN)

27
Q

name the most pathogenic Sarcocystis species of cattle

A

S. cruzi

28
Q

2 most important pathogenic lesions of S. cruzi

A 
hair loss(particularly at TIP of TAIL)
hypersalivation
29
Q

first recognizable lesion in S. cruzi infection

A

focal necrosis in gut associated lymph nodes

30
Q

in chronic cases of S. cruzi, the most notable lesion is _________

A

serous atrpohy of fat(esp. pericardial & perirenal)

31
Q

2 species of sacrocystis found in buffalo

A

S. fusiformis(buffalo CAT)

S. levinei(buffalo DOG)

32
Q

S. cruzi sarcocyst has _______ like protusions

A

ribbon

33
Q

S. fusiformis sarcocyst has ________ like protusions

A

cauliflower

34
Q

S. levinei sarcocyst has _______ villar protusions

A

sloping wavy

35
Q

Sarcocystis species found in sheep are

A

S. tenella(DOG)
S. arieticanis(DOG)
S. gigantica(CAT)
S. medusiformis(CAT)

36
Q

sarcocyst of S. arieticanis has _________ projections

A

hair like

37
Q

sarcocyst of S. gigantica has _______wall

A

PAS positive
connective tissue
secondary

38
Q

No secondary wall in present in S. medusiformis TRUE or FALSE

A

TRUE

39
Q

most pathogenic Sarcocystis species of goat is

A

S. capracanis

40
Q

S. capracanis sarcocyst has _________ like protusions

A

finger

hair like in S. arieticanis

41
Q

first generation schizonts of sarcocystis of pig are found in ________

A

liver endothelium

42
Q

name the sarcocystis of pig have radially striated sarcocyst

A

S. miescheriana

43
Q

Sarcocystis of pig which is zoonotic

A

S. suihominis

44
Q

how to kill sarcocysts in meat

A

heat exposure above 55 C for 20 min

protozoology (15 decks)

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