Dignea ( Flukes) Flashcards Preview

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Flashcards in Dignea ( Flukes) Deck (16)
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1
Q

Name the(7) characteristics of the Fluke worm

A
  1. Flattened body
  2. Nonsegmented and leaf shaped
  3. inhabit the intestine or tissues of humans
  4. size varies from few mm to cm
  5. all adlut flukes have two cup shaped muscular suckers ( oral and ventral sucker)
  6. Simple digestive system
  7. the body surface can absorb soluble nutrients and release soluble waste products
2
Q

What are the two types of flukes that can infect humans?

A
  1. lives in tissue or intestines - are HERMAPRODITIC

2. Lives unisexual in the abdominal blood vessels known as SCHITOSSMA

3
Q

What is usually known as the intermediate host for parasitic fluke

A

water snail

4
Q

T/F the larval stage for parasitic flukes goes like this:

1. Metacercaria»»>mircardium»»cercaria as final larvae stage

A

False

1. miracardium»»cercaria»»>metacercaria as final larvae stage

5
Q

Name the two common ORGAN flukes

A
  1. Fasciolopsis buski ( intestinal fluke)

2. Fasciola bacteria ( sheep liver fluke)

6
Q

Where does the sheep liver fluke normally live in host?

A

adults live in the bile duct of sheep - does not penetrate bile duct , just moves around and feeds on the bile juice

7
Q

what is the official name of the chinese liver fluke?

A

Clonorchis sinensis

8
Q

which is the most common known fluke in the US?

A

the Chinese Fluke

9
Q

what are the two intermediate hosts for the chinese liver fluke

A
  1. snails.

2. fish

10
Q

How do humans get infected by the chinese liver fluke

A

Humans ingest metacercariae in undercooked fish>larvae hatch and climb into the bile duct where they mature and shed the eggs into the intestinal tract

11
Q

what are some symptoms by the chinese liver fluke

A

jaundice
hepatomegaly
anorexia

12
Q

this fluke occupies the lungs of reservoir mammals .. mammals release eggs through sputum or feces
also adult are hermaphroditic .. they can release eggs in the lungs…. what is this fluke called?

A

Paragonimus westermani ( oriental lung fluke)

13
Q

What is the name for Blood Flukes?

A

Schistosomes

14
Q

what are the 3 species that causes human diseases? (blood Flukes)

A
  1. Schistosoma mansoni
  2. Schistosoma japanicum
  3. Schistosoma haematobium
15
Q

What is known as the SWIMMER’s itch

A

Microbilharzia varglandis

16
Q

Definitive Host for swimmer’s itch is humans T/F

A

False - water fowls, ducks, geese and swans