Parasites: Platyhelminthes_Cestodes (tapeworms) Flashcards

1
Q

Two subclasses

A

Eustoda and Cotyloda

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2
Q

Cotyloda

A

pseudo tapeworms

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3
Q

Eustoda

A

True tapeworms

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4
Q

embryos

A

hexacanth egg packets or baskets

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5
Q

larval stage

A

metacestode

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6
Q

arthropod
intermediate host=flea

A

Metacestode: Cysticeroid

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7
Q

Mammalian
intermediate host=bladder worm

A

Metacestode: Cysticercus

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8
Q

variation of bladder worm

A

Metacestode: Hydatid cyst

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9
Q

metacesode: coenurus

A

variation of bladder worm

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10
Q

solid body, invagiated scolex, capable of asexual reproduction and can multiply exponentially

A

Metacestode: Tetrathyridium

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11
Q

route of infection

A

ingestion of intermediate host

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12
Q

predilection site

A

small intestine

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13
Q

adult stage

A

proglottids

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14
Q

variation of bladder worm

A

Metacestode: coenurus

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15
Q

body

A

strobilla

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16
Q

attachments

A

armed rostellum and acetabula

17
Q

flea tapeworm, cucumber tapeworm, double pored tapeworm,

A

Dipylidium caninium

host=dog and cat
route=flea (ingest int host)
sign/symptom=asymptomatic, GI upset, pruritus
PPP=2-3 weeks
DX=fecal float: eggs, visual ID: proglottids
Tx=Praziquantel and Epsiprantel
Zoonosis=nocturnal irritability, anorexia, weight loss

18
Q

canine taeniad

A

Taenia pisiformis
dogs
rabbit/hares (ingest of int host)

19
Q

“feline taeniad”

A

Taenia taneiformis

cats

rabbit/hare (ing of int host)

20
Q

coenurus producing tapeworm

A

Multiceps spp.
cat
rats and mice (ing of int host)

21
Q

“hydatid tape worms

A

Echinoccocus granulosus

cat, dog, fox, cotoye=host

sheep, cattle, goat, pig (ing of int host)
zoo=cystic echinoccocis “hydatid cysts”
humans are the intermediate host

22
Q

multiocular hydatid tapeworm

A

Echinococcus multicularis

dog

sheep, cattle, goat (ing of int host)
zoo=alveolar echinococcus-fatal!
humans are the intermediate host

23
Q

“tapeworm of ruminants”

A

Monezia spp.

ruminants

Dx: fecal float, mc masters
grain mite/pasture mite (ing int host)

24
Q

“dwarf tapeworm”

A

Hymenolepis nana
armed rostellum
flea, flour, bettle, cockroach (ing of int host)
zoo=headache, pruritus, difficulty sleeping

25
Q

“rodent tapeworm”

A

Hymenolepis diminuta

unarmed rostellum
flea, flour, bettle, cockroach (ing of int host)
zoo=headache, pruritus, difficulty sleeping

26
Q

“beef tapeworm”

A

Taenia saginata
ingestion of undercooked cattle
humans are the definitive host-Taemiasis

27
Q

“pork tapeworm”

A

Taenia solium
ingestion of intermediate host swine
humans are the definitive host-Taemiasis

28
Q

“zipper or sparganosis tapeworm”

A

Spirometra spp.

dogs and cats

fish and frog-fesh water (ing of int host)
zoo=”sparganosis” isceral migration: to skeletal muscles, subcutaneous tissue, ocular, CNS ( repeated headaches )

29
Q

“broad fish tapeworm”

A

Diphyllobothrium latum

dogs, cat, pig, human

fresh water fish (ing of int host)
zoo=”diphyllobothriasis” Vit B12 deficiency and anemia