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Parasitology > Week Three: Phylum Platyhelminthes (Chapter Five) > Flashcards

Week Three: Phylum Platyhelminthes (Chapter Five) Flashcards

1
Q

What class is eucestoda, in?

A

Cestoda

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2
Q

What class is the platyhelminthe, fluke, in?

A

Trematoda

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3
Q

What is cotyloda?

A

Pseudotapeworm

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4
Q

What is a eucestoda?

A

True tapeworm

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5
Q

What do flukes look like?

A

Flat, leaf shaped

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6
Q

What do tapeworms look like?

A

Long, ribbon like, segmented

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7
Q

What are proglottids?

A

Section of a tapeworm that contains eggs (end pieces of parasite)

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8
Q

What is the scolex?

A

Head of a cestode

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9
Q

What is a cestodes organ of attachment and how are nutrients absorbed?

A

Lining of small intestine; nutrients are absorbed through the tegument

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10
Q

What are the two types of attachment cestodes use to attach to the mucosa of the small intestine?

A

Acetabula (suckers, unarmed tapeworm)

Rostellum (backward facing hooks, armed tapeworms)

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11
Q

What does hermaphroditic mean?

A

Contains complete sets of both male and female reproductive organs

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12
Q

What does hexacanth mean?

A

Six hooks

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13
Q

What is the dipylidium egg?

A

Egg packet containing multiple hexacanths within one egg

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14
Q

What is a taenia?

A

Egg has one hexacanth within the egg

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15
Q

Explain the life cycle of a cestode

A
  • Gravid proglottids pass to outside environment and rupture
  • Egg must be ingested by intermediate host
  • (Within host-egg develops into metacestode)
  • Definitive host becomes infected by ingesting intermediate host
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16
Q

How does the definitive host become infected by a cestode? (Dipylidium)

A

By ingesting the intermediate host

ex. dog eating a flew

17
Q

What is an example of an intermediate host of a cestode (taenia)?

A

Arthropods

  • Fleas
  • Mites
18
Q

How does the definitive host become infected by a cestode? (taenia)

A

By ingesting the intermediate host

ex. dog eats a bird that in infected with parasite

19
Q

What is the cysticercus stage?

A

Bladder worm stage

20
Q

Explain the appearance of cotyloda

A

Long, segmented, flattened, almost ribbon like

Contains scolex and bothria

21
Q

What are bothria?

A

Two slitlike, hold fast organelles on anterior end of pseudotapeworm

22
Q

Where is the attachment site of cotyloda and how do they absorb nutrients?

A

Lining of small intestine; absorb nutrients through the body wall

23
Q

Do cotyloda have one or two sexes?

A

Hermaphroditic- two (both male and female)

24
Q

Dipylidium caninum:

Host, location of adult, intermediate host, transmission route, and common name

A 
Host: Dogs and cats
Location of adult: Small intestine
Intermediate host: Adult fleas
Transmission route: Ingestion of infective adult flea
Common name: Tapeworm
25
Q

What is the treatment of Dipylidium caninum?

A

Praziquantel
Epsiprantel
Flea control

26
Q

Taenia pisiformis, T. hydatigena, T. ovis:

Host, location of adult, transmission route, common name

A

Host: Dogs
Location of adult: Small intestine
Transmission route: Ingestion of infective intermediate host
Common name: Mutton tapeworm of dogs

27
Q

Intermediate hosts for:
Taenia pisiformis
Taenia hydatigena
Taenia ovis

A

T. pisiformis: Rabbits and hares
T. hydatigena: Ruminants
T. ovis: Sheep

28
Q

What is the treatment for Taenia spp

A

Praziquantel

Epsiprantel

29
Q

Taenia taeniaeformis:

Host, location of adult, intermediate host, transmission route, common name

A

Host: Cats
Location of adult: Small intestine
Intermediate host:Rats and mice
Transmission route: Ingestion of infective rats or mice
Common name: Feline taeniid, feline tapeworm

30
Q

Treatment for Taenia taeniaeformis

A

Praziquantel

31
Q

Spirometra spp:

Host, location of adult, intermediate host (first and second), transmission route, common name

A

Host: Dogs and cats
Location of adult: Small intestine
First intermediate host: Aquatic crustacean
Second intermediate host: Fish or frogs
Transmission route: Ingestion of infective fish or frog
Common name: Zipper tapeworm, sparganosis tapeworm

Parasitology (17 decks)

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