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Parasitology (TS) > Parasitology Quiz 4 > Flashcards

Parasitology Quiz 4 Flashcards

T. pisiformis T. ovis T. hydatigena T. taeniaeformis T. multiceps T. saginata T. solium Echinococcus granulosus & E. multilocularis Dipylidium

1
Q

What life cycles do tapeworms have?

A

indirect - metacestodes (larvae) are extra intestinal in intermediate hosts

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2
Q

What is characteristic of the scolex of cestodes?

A

4 suckers (cyclophyllidea) or 2 bothria (longitudinal grooves that attach)

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3
Q

What is the name for mature segments of the cestodes?

A

strobila - the whole chain (proglottids - individual segments)

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4
Q

What is the family of all the parasites on this quiz?

A

cyclophyllidea - circular sucker

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5
Q

What is the dome like projection at the apex of the scolex called?

A

rostellum

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6
Q

What is the term for the fully developed cestode eggs containing first stage larvae?

A

oncosphere

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7
Q

What is the term for a single fluid filled cyst with one attached, invaginated scolex?

A

cysticercus (protoscolex)

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8
Q

What is the term for a fluid filled cyst with many invaginated scolices?

A

coenurus

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9
Q

What is the term for a cysticercus with an evaginated scolex? (asexual proglottids)

A

strobilocercus

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10
Q

Which family requires 2 intermediate hosts?

A

mesocestoididae

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11
Q

What are the direct hosts of taeniidae cestodes?

A

carnivores or humans

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12
Q

What are the intermediate hosts of taeniidae cestodes?

A

prey of the DH

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13
Q

What are the DH and IH of Taenia pisiformis?

A

DH - canids and wild carnivores

IH - rabbits and hares

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14
Q

What are the DH and IH of Taenia ovis?

A

DH - canids and wild carnivores

IH - sheep

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15
Q

What are the IH of Taenia hydatigena?

A

cattle, sheep, swine, some wild ungulates

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16
Q

What is hepatitis cysticercos?

A

condition resembling acute fasciolosis pathology

17
Q

What is the DH and IH of T. taeniaeformis?

A

DH - cats

IH - mice and other rodents

18
Q

What is the DH and IH of T. multiceps?

A

DH - domestic dog and wild canids

IH - sheep, goats, cattle

19
Q

What is a coenurus cerbralis?

A

mature cyst is a large fluid filled cyst bearing clusters of scolices on its internal wall

20
Q

What taenia species do the IH get coenurus cerebralis?

A

T. multiceps

21
Q

What are the CS of coenurus cerebralis?

A

neurological signs of progressive space occupation, clinical syndrome- True Gid

22
Q

Where are cystecerci found in the IH of T. ovis?

A

skeletal and cardiac muscle

23
Q

Where are cysticerci found in T. hydatigenia?

A

Cysticercus tenuicolis - liver of sheep or big

associateed with C. novyi

24
Q

What are the DH and IH of T. saginata?

A

DH - humans

IH - cattle

25
Q

What are the DH and IH of T. solium?

A

DH - humans

IH - pigs

26
Q

What are the symptoms of T. solium in humans?

A

cerebral cysticercosis (arizona official died in car accident because of this)

27
Q

What are the DH and IH of Echinococcus granulosa?

A

DH - canids

IH - ruminants, man, pig

28
Q

Where are hydatid cysts located in E. granulosa?

A

liver and lungs

29
Q

What kind of hydatid cyst is associated with E. multilocularis?

A

alveolar hydatid cyst - has CT capsule and grows like malignant neoplasm

30
Q

What kind of hydatid cyst is associated with E. granulosa?

A

unilocular hydatid cysts - grow slowly, do not infiltrate

31
Q

What are the DH and IH of E. multicularis?

A

DH - canids and cat

IH - rodents (voles and lemmings)

32
Q

What is the most common tapeworm of dogs and cats?

A

Diplydium caninum

33
Q

What do the segments look like in D. caninum?

A

cucumber seed like and 2 sets of genital organs

34
Q

What are the intermediate hosts of Dipylidium caninum?

A

fleas and lice

Parasitology (TS) (10 decks)

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