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Parasitology > Intestinal flukes > Flashcards

Intestinal flukes Flashcards

1
Q

What is the common name of Fasciolopsis buski?

A

Giant intestinal fluke

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2
Q

First intermediate host of Fasciolopsis buski

A
  • Segmentina spp.
  • Hippeutis spp.

Gyraulus din daw pwde sabi ma’am diana

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3
Q

Second intermediate host of Fasciolopsis buski

A
  • Trapa bicornis (water caltrop)
  • Eliocharis tuberosa (water chestnut)
  • Ipomea obscura (kangkong)
  • Nymphaea lotus (lotus)
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4
Q

Adult worms of Fasciolopsis buski inhabit the small intestine, specifically where? (portions of d small intestine)

A

duodenum & jejunum

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5
Q

To differentiate Fasciolopsis from Fasciola, the intestinal ceca of Fasciolopsis buski is ____.

branched or unbranched

A

unbranched

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6
Q

The ellipsoid eggs of Fasciolopsis buski are yellow-brown in color and its appearance is generally described as what?

A

Hen’s egg appearance

The shell is transparent, with a small operculum at the more pointed end

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7
Q

The attachment of Fasciolopsis buski to the mucosa of the bowel causes local inflammation and ulceration, sometimes accompanied by ____.

bleeding from a dmgd vessel

A

hemorrhage

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8
Q

Heavier infections of Fasciolopsis buski is suggestive of what diseases/manifestations?

A
  • Duodenal ulcer disease
  • Malabsorption
  • Intestinal obstruction
  • Diarrhea
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9
Q

Drug of choice for fasciolopsiasis

A

Praziquantel

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10
Q

What are the two species under Echinostomes?

A
  • Echinostoma ilocanum
  • Artyfechinostomum malayanum
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11
Q

True or False

Only Echinostomes have a collarette spine on a circumoral disk surrounding the sucker

A

True

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12
Q

True or False

The secondary intermediate host of Echinostomes are snails.

A

True

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13
Q

First intermediate host of Echinostoma ilocanum

A
  • Gyraulus convexiusculus
  • Hippeutis umbilicalis
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14
Q

Second intermediate host of Echinostoma ilocanum

A
  • Vivipara angularis (Susong pampang)
  • Pila luzonica (Kuhol)
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15
Q

First intermediate host of Artyfechinostomum malayanum

A
  • Gyraulus convexiusculus
  • Hippeutis umbilicalis

not yet identified but suspected to tbe d same w/ Echinostoma ilocanum

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16
Q

Second intermediate host of Artyfechinostomum malayanum

A
  • Lymnaea cumingiana
  • Ampullaris canaliculatus
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17
Q

common name of Echinostoma ilocanum

A

Garrison’s fluke

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18
Q

common name of Artyfechinostomum malayanum

A

wala haha

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19
Q

Adult Echinostoma ilocanum is a reddish-gray worm tapered posteriorly and has ____ to ____ collarette of spines.

how many?

A

49 to 51

20
Q

how many collarette of spines does Artyfechinostomum malayanum have?

A

43 to 45

21
Q

Echinostoma ilocanum eggs are straw-colored, operculated, and are ____ than Artyfechinostomum malayanum

larger or smaller

A

smaller

22
Q

Artyfechinostomum malayanum eggs are golden-brown and are operculated that are ____ than Echinostoma ilocanum

larger or smaller

A

larger

23
Q

The unembryonated eggs of Echinostomes are similar in shape to those of what spp.?

A

Fasciolopsis

24
Q

Drug of choice for Echinostomes?

A

Praziquantel

Tetrachloroethylene is effective too

25
Q

What are the two species under Heterophyids?

A
  • Heterophyes heterophyes
  • Metagonimus yokogawai
26
Q

Among the two Heterophyids, which is somewhat larger?

A

Metagonimus yokogawai

27
Q

First intermediate host of Heterophyes heterophyes

A

Pironella conica

28
Q

Second intermediate hosts of Heterophyes heterophyes

A

Brackish and saltwater fishes; Tilapia; Mullet

Mullet = Mugil cephalus

29
Q

First intermediate host of Metagonimus yokogawai

A

Semisulcospira spp.

from CDC

30
Q

Second intermediate host of Metagonimus yokogawai

A

Brackish and saltwater fishes; Tilapia; Mullet

Mullet = Mugil cephalus

31
Q

Heterophyes heterophyes is said to be ____- or ____-shaped with three suckers

A

avocado-shaped or pear-shaped

32
Q

Heterophyes heterophyes is also called as the ____ fluke of man

largest or smallest

A

smallest

33
Q

The eggs of Heterophyids closely resemble the eggs of what spp.?

A

Clonorchis & Opisthorchis

also, magkamukha rin H. heterophyes & M. yokogawai

34
Q

Occasionally, the eggs of what flukes invade the intestinal mucosa and their eggs deposited in the tissues may gain access to the circulation leading to formation of brain or spinal cord embolisms?

A

Heterophyids

Seizures, neurologic deficits, and cardiac insufficiency have been ascribed to granulomas that form around these eggs.

35
Q

14% of the cardiac failures in the Ph is associated with what intestinal fluke?

A

Heterophyids

thus, heterophyid myocarditis

36
Q

Drug of choice for Heterophyid infections

A

Praziquantel

Tetrachloroethylene is possible too

37
Q

Among the intestinal flukes, which of them inhabits the large intestine, particularly the cecum and ascending colon?

A

Gastrodiscoides hominis

38
Q

Drug of choice for Gastrodiscoides hominis

A

Tetrachloroethylene

Praziquantel

39
Q

First intermediate host of Gastrodiscoides hominis

A

Helicorbis coenosus

40
Q

Second intermediate host of Gastrodiscoides hominis

A

Water plants

41
Q

Common name of Heterophyes heterophyes

A

Von Siebold’s fluke

42
Q

Common name of Metagonimus yokogawai

A

Yokogawa fluke

43
Q

Common name of Gastrodiscoides hominis

A

Colonic fluke

44
Q

Fasciolopsiasis is suggestive of a malabsorptive process such as is seen in what parasitic disease?

A

giardiasis

45
Q

The absorption of vitamin ____ has been found to be impaired in some persons w/ fasciolopsiasis.

A

Vitamin B12

Parasitology (25 decks)

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