Difference between revisions of "Liver Cestodes"
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(Redirected page to Category:Liver Cestodes) |
(Created page with '*tapeworms *have both intermediate and final hosts in their life cycle *main expression in the UK are the encysted forms that utilise the liver a…') |
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| − | + | *tapeworms | |
| + | *have both intermediate and final hosts in their life cycle | ||
| + | *main expression in the UK are the encysted forms that utilise the [[Liver - Anatomy & Physiology|liver]] and other organs in intermediate hosts | ||
| + | =====Taenia hydatigena===== | ||
| + | *the most important species | ||
| + | *final host | ||
| + | **dog | ||
| + | **alimentary tract | ||
| + | *intermediate host | ||
| + | **ruminant, horse, or pig | ||
| + | *life cycle is completed when the carnivore eats the tissues of the intermediate host containing the cysts | ||
| + | *the intermediate stage - Cysticercus tennuicollis | ||
| + | **fluid filled cysts on the surface of the [[Liver - Anatomy & Physiology|liver]] and in the [[Peritoneal cavity - Anatomy & Physiology|peritoneal cavity]] | ||
| + | NB: other Taenia species have muscle and brain as preferred sites in the intermediate hosts | ||
| + | |||
| + | Some can infect humans - zoonoses | ||
| + | |||
| + | =====Echinococcus granulosus===== | ||
| + | *Hydatid Disease | ||
| + | *final host | ||
| + | **dog, fox, and other canids | ||
| + | *intermediate host | ||
| + | **sheep most commonly affected | ||
| + | **ox and horses | ||
| + | NB: can also affect man - zoonosis | ||
| + | *'''hydatids''' - the cyst form | ||
| + | **develops from the ova | ||
| + | **occur in the lung and [[Liver - Anatomy & Physiology|liver]] | ||
| + | **cysts are usually multiple | ||
| + | **5-10cm in diameter | ||
| + | **contain a clear fluid with numerous scolices or '''"hydatid sand"''' | ||
| + | **the small calcified lesions that are sometimes present in the [[Liver - Anatomy & Physiology|liver]] of sheep may represent degenerate hydatid cysts | ||
| + | **can be very prevalent in some geographical areas[[Category:Hepatitis,_Parasitic]] | ||
Revision as of 14:40, 7 June 2010
- tapeworms
- have both intermediate and final hosts in their life cycle
- main expression in the UK are the encysted forms that utilise the liver and other organs in intermediate hosts
Taenia hydatigena
- the most important species
- final host
- dog
- alimentary tract
- intermediate host
- ruminant, horse, or pig
- life cycle is completed when the carnivore eats the tissues of the intermediate host containing the cysts
- the intermediate stage - Cysticercus tennuicollis
- fluid filled cysts on the surface of the liver and in the peritoneal cavity
NB: other Taenia species have muscle and brain as preferred sites in the intermediate hosts
Some can infect humans - zoonoses
Echinococcus granulosus
- Hydatid Disease
- final host
- dog, fox, and other canids
- intermediate host
- sheep most commonly affected
- ox and horses
NB: can also affect man - zoonosis
- hydatids - the cyst form
- develops from the ova
- occur in the lung and liver
- cysts are usually multiple
- 5-10cm in diameter
- contain a clear fluid with numerous scolices or "hydatid sand"
- the small calcified lesions that are sometimes present in the liver of sheep may represent degenerate hydatid cysts
- can be very prevalent in some geographical areas