Sarcocystis Flashcards
asexual stages occur in ________ host which is often __________
intermediate
prey animal
Sarcocystis is Heteroxenous T or F
True
becuase they have more than 1 kind of host
sexual stages develop in __________ host which is _________
definitive host
carnivorous(predator)
_________ is terminal asexual stage
sarcocyst(similar to schizont)
sarcocyst in presen in ___________ of IH
striated muscles
sarcocysts are of two types i.e.
macroscopic
microscopic
macroscopic sarcocyst(>1mm) are found in _________
S. cruzi of cattle-dog cycle
microscopic sarcocyst(<1mm) is seen in _________
S. fusiformis of buffalo-cat cycle
immature sarcocyst contain globular parasites called __________
metrocytes(mother cells)
metrocytes produce banana shaped _________ throught the process of ___________
bradyzoites
endodyogeny
________ are located in cortex of sarcocyst & ________ in medulla
metrocytes
bradyzoites
Sarcocystis are more host specific fo IH or DH
IH
the only Sarcocystis species trasnmissible to dogs, which is transmitted to cats in __________
S. cruzi
on ingestion if sarcocyst by DH, ________ is liberated in its intestine
bradyzoites
bradyzoites develop into _______ & ________ in ratio if ______
macrogamont
microgamont
95:5
gametogonic stages develop in which cells?
goblet cells
entericytes
oocysts sporulate in external enviroment or DH
in lamina propria of DH
oocyst are shed between ____& ____ weeks after ingestion of sarcocyst
1-2 weeks
sarcocysts are formed from what?
merozoites liberated from 2nd generation schizonts develop into sarcocyst in striated muscles
each sporulated oocyst of Sarcocystis is
_________sporocystic
_________sporozoic
BIsporocystic
TETRAsporozoic
similar to Isospora
IH become infected by ingesting __________
sporocyst
sporozoites develop into schizonts in __________ part of body
endothelial cells of blood vessels of organs
1st gen. schizonts are harmful or 2nd gen. schizonts
2nd generation schizonts
sarcocysts formation occur in _______ part of body
striated muscles
microsarcocyst belong to those species in which DH is ____________
canids/humans
macrosarcocyst belong to those species in which DH is _________
felids
name the three species of Sarcocystis in cattle
S. cruzi(cattle-DOG)
S. hirsuta(cattle-CAT)
S. hominis(cattle-MAN)
name the most pathogenic Sarcocystis species of cattle
S. cruzi
2 most important pathogenic lesions of S. cruzi
hair loss(particularly at TIP of TAIL) hypersalivation
first recognizable lesion in S. cruzi infection
focal necrosis in gut associated lymph nodes
in chronic cases of S. cruzi, the most notable lesion is _________
serous atrpohy of fat(esp. pericardial & perirenal)
2 species of sacrocystis found in buffalo
S. fusiformis(buffalo CAT)
S. levinei(buffalo DOG)
S. cruzi sarcocyst has _______ like protusions
ribbon
S. fusiformis sarcocyst has ________ like protusions
cauliflower
S. levinei sarcocyst has _______ villar protusions
sloping wavy
Sarcocystis species found in sheep are
S. tenella(DOG)
S. arieticanis(DOG)
S. gigantica(CAT)
S. medusiformis(CAT)
sarcocyst of S. arieticanis has _________ projections
hair like
sarcocyst of S. gigantica has _______wall
PAS positive
connective tissue
secondary
No secondary wall in present in S. medusiformis TRUE or FALSE
TRUE
most pathogenic Sarcocystis species of goat is
S. capracanis
S. capracanis sarcocyst has _________ like protusions
finger
hair like in S. arieticanis
first generation schizonts of sarcocystis of pig are found in ________
liver endothelium
name the sarcocystis of pig have radially striated sarcocyst
S. miescheriana
Sarcocystis of pig which is zoonotic
S. suihominis
how to kill sarcocysts in meat
heat exposure above 55 C for 20 min
