Difference between revisions of "Helminth Flashcards"

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{{toplink
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'''[[Cestodes Flascards]]
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|backcolour = f5fffa
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|linkpage =Helminths
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'''[[Trematodes Flashcards]]
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|linktext =HELMINTHS
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|sublink1 =Flash Cards - WikiBugs
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'''[[Nematode Flashcards]]
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|subtext1 =WIKIBUGS FLASHCARDS
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|pagetype =Bugs
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'''[[Cattle Nematode Flashcards]]
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}}
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==<font color="purple">Cestodes</font>==
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'''[[Small Ruminant Nematodes Flashcards]]
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{| border="3" cellpadding="8"
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!width="400"|'''Question'''
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'''[[Horse Nematode Flashcards]]</big>
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!width="400"|'''Answer'''
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!width="150"|'''Article'''
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[[Category:Parasite Flashcards]][[Category:Helminths]]
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|<big>'''Fill in the missing words about cestodes'''
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||<big>A cestode (tapeworm) is a chain (<font color="white">'''''strobila'''''</font>) of progressively maturing reproductive units called <font color="white">'''''proglottids'''''</font> anchored at one end to the intestinal wall by a hold-fast organ called the <font color="white">'''''scolex'''''</font>.
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||[[Cyclophyllidea#Structure and Function|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''What species of Taenia occur in dogs?'''
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||<font color="white"> <big>
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*'''''Taenia ovis'''''
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*'''''Taenia hydatigena'''''
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*'''''Taenia pisiformis'''''
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*'''''Taenia multiceps'''''
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*'''''Taenia serialis'''''
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||[[Taenia#Structure and Function|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''What are the more obvious morphological features of the scolex of a cyclophyllidean tapeworm?'''
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||<font color="white"> <big>
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*'''''Four suckers'''''
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*'''''Rostellum with rows of large hooks'''''
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*'''''Unsegmented neck (behind the scolex) which gives rise to new segments'''''
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||[[Insecta#Respiratory System|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Describe the features of a cysticercus'''
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||<font color="white"> <big>
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*'''''Fluid filled bladder, containing a single invaginated head (protoscolex) - seen as a white blob on the wall of the cyst'''''
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||[[Insecta#Circulatory System|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''In which host(s) would you expect to find the cysticercus of ''T. hydatigena'' and where in the host might it be found?'''
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||<font color="white"> <big>
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*'''''Sheep (mostly)''''''
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*'''''Cattle'''''
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*'''''Pigs'''''
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*'''''Found in the peritoneal cavity
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||[[Insecta#Life Cycles|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''What is the difference between a coenurus and a cysticercus?'''
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||<font color="white"> <big>
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*'''''A coenurus is a fluid filled bladder with multiples (dozens) of inverted head attached to the wall'''''
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*'''''Whereas the cysticercus  has only a single inverted scolex.'''''
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||[[Insecta#Life Cycles|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''How does the distribution of hydatid cysts differ in sheep, horses and humans?'''
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||<font color="white"> <big>
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*'''''Sheep = most are in the lungs with smaller numbers in the liver'''''
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*'''''Horses = nearly all are in the liver'''''
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*'''''Humans = most are in the liver, with some in the lungs and a few elsewhere'''''
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||[[Insecta#Simple Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''What tapeworms occur in the cat?'''
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||<font color="white"> <big>
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*'''''Taenia taeniaeformis'''''
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*'''''Dipylidium'''''
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||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Why is it so difficult to prevent many cats from becoming re-infected with ''T.  taeniaeformis''?'''
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||<font color="white"> <big>
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*'''''The intermediate hosts are mice and other small mammals that are hunted'''''
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||[[Insecta#Simple Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Where in the host (horse) would you expect to find ''Anoplocephala''?'''
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||<font color="white"> <big>
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*'''''Ileo-caecal junction'''''
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||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Why are ''Anoplocephala'' eggs rarely seen on routine faecal examination?'''
 +
||<font color="white"> <big>
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*'''''They are dense structures and do not always float in the flotation media used in routine diagnosis'''''
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||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Why is it so difficult to prevent grazing horses from becoming re-infected with ''Anoplocephala''?'''
 +
||<font color="white"> <big>
 +
*'''''The intermediate hosts are ubiquitous free-living pasture mites'''''
 +
||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Describe the appearance of ''Moniezia'''''
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||<font color="white"> <big>
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*'''''Long tapeworm (up to 2m)'''''
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*'''''Segments much wider than they are long'''''
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||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''Why is ''T. solium'' more dangerous to human health than ''T. saginata''?'''
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||<font color="white"> <big>
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*'''''If T. solium eggs get into the human small intestine, they will hatch and cysticerci can establish in the musculature and CNS. This does not happen with T. saginata.'''''
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||[[Insecta#Complex Metamorphosis|<span title="Answer article">Link to Answer Article</span>]]
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|}

Revision as of 14:59, 18 May 2009

Infectious agents and parasitesWikiBugs Banner.png
HELMINTHS
WIKIBUGS FLASHCARDS


Cestodes

Question Answer Article
Fill in the missing words about cestodes A cestode (tapeworm) is a chain (strobila) of progressively maturing reproductive units called proglottids anchored at one end to the intestinal wall by a hold-fast organ called the scolex. Link to Answer Article
What species of Taenia occur in dogs?
  • Taenia ovis
  • Taenia hydatigena
  • Taenia pisiformis
  • Taenia multiceps
  • Taenia serialis
 Link to Answer Article
What are the more obvious morphological features of the scolex of a cyclophyllidean tapeworm?
  • Four suckers
  • Rostellum with rows of large hooks
  • Unsegmented neck (behind the scolex) which gives rise to new segments
 Link to Answer Article
Describe the features of a cysticercus
  • Fluid filled bladder, containing a single invaginated head (protoscolex) - seen as a white blob on the wall of the cyst
 Link to Answer Article
In which host(s) would you expect to find the cysticercus of T. hydatigena and where in the host might it be found?
  • Sheep (mostly)'
  • Cattle
  • Pigs
  • Found in the peritoneal cavity
 Link to Answer Article
What is the difference between a coenurus and a cysticercus?
  • A coenurus is a fluid filled bladder with multiples (dozens) of inverted head attached to the wall
  • Whereas the cysticercus has only a single inverted scolex.
 Link to Answer Article
How does the distribution of hydatid cysts differ in sheep, horses and humans?
  • Sheep = most are in the lungs with smaller numbers in the liver
  • Horses = nearly all are in the liver
  • Humans = most are in the liver, with some in the lungs and a few elsewhere
 Link to Answer Article
What tapeworms occur in the cat?
  • Taenia taeniaeformis
  • Dipylidium
 Link to Answer Article
Why is it so difficult to prevent many cats from becoming re-infected with T. taeniaeformis?
  • The intermediate hosts are mice and other small mammals that are hunted
 Link to Answer Article
Where in the host (horse) would you expect to find Anoplocephala?
  • Ileo-caecal junction
 Link to Answer Article
Why are Anoplocephala eggs rarely seen on routine faecal examination?
  • They are dense structures and do not always float in the flotation media used in routine diagnosis
 Link to Answer Article
Why is it so difficult to prevent grazing horses from becoming re-infected with Anoplocephala?
  • The intermediate hosts are ubiquitous free-living pasture mites
 Link to Answer Article
Describe the appearance of Moniezia
  • Long tapeworm (up to 2m)
  • Segments much wider than they are long
 Link to Answer Article
Why is T. solium more dangerous to human health than T. saginata?
  • If T. solium eggs get into the human small intestine, they will hatch and cysticerci can establish in the musculature and CNS. This does not happen with T. saginata.
 Link to Answer Article
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