LIFE STYLE OF SCHISTOSOMA



                                               
LIFE CYCLE







*the stage in the snail include two generation of SPOROCYST
*after sporocyst,cercariae are produce within the snail
*Upon release from the snail  the infective cercariae swim, penetret theskin of the  human host
*During penetration to the human host the cercariae shed their forkedtail and become schistomalae and schistomulae migrate through several tissue and stages to their residence in the veins and mature into adult worms.
*Adult worms in human reside in the mecenteric venulesin varias location , which at time seem to be specific schistosoma japonicum is more frequently found in the Superior mesenteric vein,draining the small intestine schistosoma manson occur more often the superior   mecenterih vein draining the large intestine.
*Both japonicum and schistosoma manson can occupy either location and capable of moving beatween sites schistosomahaematobium most often occur in the venous plexus of bladder ,but it can also found in the rectal venules.
*the female deposite eggs in the small venules of the postal and perivesical system
*The eggs are moved proglessively towards the lumen of the intestine schistosoma manson and schistosoma japonicum in the bladder and ureters schistosoma haematobium and are eliminated with faeces or urine .
*Respectively various animals such as Dogs,cats,rodents ,pigs,horses and goats,serves as reservoirs for schistosoma japonicum.
DIAGNOSTIC
*observation of oval or eggs in stool or urine.
*formal ether concetration-this is a technique used to diagnos as sample is stool, we shall add formal with stool,formal used to clean all particals in stool for identify parasite that present in human body   
DISEASE
*the disease cauced by schistosoma species or clinical comlication are
schistomiasis haematobium (Bilhazia) associated with several condition
*malignancy of bladder
*ulceration of the urinary bladder
*Haematuria
*swimmers itch
*Katayama disease

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