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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

where is dendriticum adult in DH?

bile duct