اسئلة باراسيتولوجي واجاباتها

Questions and answers


1-give reason:-in fasciola,diagnosis by stool


examination is repeated.


-to differentiate between true & false fasciolasis.



2-in fasciola,seriological test is more useful.


-to detect true & false fascioliasis.


-in early stage,there is no eggs to detect.


-avoid intermittent absence of eggs in stool.



3-give reason:-water from rever is preserved for 48 hours.


-because cercaria die after this time.



4-give reason:-there is malignancy in urinary bladder not in colon in schistosoma.


-as eggs secrete B glucuronidase+tryptophan from urine=carcinogenic ulcer.



5-give reason:-seriological test is more important for diagnosis of schistosoma.


-detect early infection.


-detect late infection.


-detect ectopic infection.



6-give reason:-Control of schistosoma haematobium is easer than mansoni.


-Because,there is no reservoir host in schistosoma haematobium but present in mansoni.




7-Differentiate bet. Miracidium,Coracidium.


Coracidium:ciliated
hexacanthembryo
Miracidium:
ciliatedbody
Point of comparison
spherical
oval
shape
-ve
+ve
Apical body
Flame cell
-ve
+ve
Penetrating gland
-ve
+ve
release
+ve
-ve
hooks





8-inf. stage ofcycticercosis eggs of taenia solium.
9-parasite affecting eye cysticercous cellulosae


10-parasite causing muscle pain,eosinophilia cysticercous cellulosae.
11-parsite causing diarrhea &colics taenia solium
12-give reason:taenia solium is more dangerous than taenia soginata?


-because it may cause autoinfection by its eggs,leading to cystecercosis that cause clinical manifestation to brain and heart.


Whil taenia saginata eggs dont hatch in small intestine of man.


13-factors affecting cysticercosis
1-allergic reaction(+ve/-ve).
2-viability of larva causing reaction.
3-organ affected.
4-numbers of larva.



14-Differentiate between unilocular – multilocular –oessus hydatid cyst???


انظر الكتاب (هو كله بالساهل ولا ايه)



15-give reason:-Niclosamide is given 5 days in treatment of H.NaNa.


-as Niclosamide not absorbed cant kill larva


-full dose(1day to kill adult).


-half dose(5days to kill larva when formed to adult).



16-Mention methods of infection of H.NaNa.


-direct,from man to man.


-contaminated food.


-autoinfection(external,interna l).



17- Mention mode of infection of H.Diminuta to man.


-when eating adult rat flea,while it get infected when it was larva.



18- Mention mode of infection D.Caninum to man.


-when eating adult dog flea during closed contact with dog(playing)



19-Mention diseases caused by closed contact to dogs.


-coneureus cerebralis cyst.


-hydatid disease.


-D.caninum.



20-Mention parasite common in children.


- D.caninum.


-H.NaNa



21-Tissue cystodes???


-def.:-cystode worms in tissue of man


-examples:-sparaganosis


-cystecercosis


-coneureus cerbralis cyst


-hydatid disease


-cysticercoid of H.NaNa



22-Mention role of cats-dogs in transmission of cystodes:


-direct,through stools:coneureus cerebralis cyst/hydatid disease/d.caninum.


-indirect:diph.manson(sparagano sis).