Flashcards in Exam 3 Deck (206)
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1
Fasciola hepatica life span
11-12 years
2
how does F. hepatica miracidium get in snail?
it penetrates it
3
what are hepatica RH's?
cow and sheep
4
what does hepatica uniquely do to our liver cells to "cultivate" them?
secretes proline to stimulate hyperplasia and hypertrophy
5
clinical and common name for hepatica infection?
fascioliasis and liver rot
6
how common is a hepatica infection in humans?
rare
7
what is the real culprit of halzoun?
pentastomid worm
8
Rx for hepatica
triclabendazole
9
what does triclabendazole do to hepatica?
stops all functions req microtubules
10
what is clinical name for eating hepatica infected beef or sheep liver?
pseudofascioliasis
11
what is it called when snails burrow in soil during dry conditions?
aestivate
12
Which fluke is identical to hepatica but not in US?
Fasciola gigantica
13
Fascioloides magna niche
liver tissue, not bile duct
14
does F. magna infect humans?
no
15
what is F. magna common name
liver fluke
16
what does F. magna produce in liver that leaves black tracks?
melanin
17
Fasciolopsis buski common name
intestinal fluke
18
what is the largest fluke to infect humans?
Fasciolopsis buski
19
Where is Fasciolopsis buski common distribution?
the orient
20
Clinical signs from heavy Fasciolopsis buski infection?
diarrhea with mucus
21
3 things buski does to cause pathology:
direct trauma, gut obstruction, allergic response to worm products
22
how will you clinically distinguish between hepatica and buski? (since both have ~100 um size eggs)
gut damage with buski and liver damage with hepatica
23
Rx for buski:
praziquantel
24
what is 2nd int. host for dendriticum?
terrestrial snail
25
how is Dicrocelium dendriticum 1st int. host infected?
must eat the tiny eggs of fluke
26
nickname for Dicrocelium dendriticum?
lancet fluke
27
Dicrocelium dendriticum distrubution:
Europe, asia, N. Africa, N. Am, Australia (everywhere but S. america)
28
Species of snail that dendriticum infects?
Cionella lubrica
29
what portion of fluke life cycle is dentriticum missing?
redia
30
