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pa r a r a > Cestodes > Flashcards

Cestodes Flashcards

1
Q

Describe cestodes: (4)

A
  1. Segmented/ribbon-like
  2. All hermaphrodites
  3. Heteroxenous except for H. nana
  4. Causes intestinal and/or tissue infections
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2
Q

Parts of tapeworms: (5)

A

Scolex
Neck
Suckers
Hooks
Proglottids

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3
Q

Holdfast organ

A

Scolex

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4
Q

Scolex of pseudophyllidea

A

2 bothria

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5
Q

Scolex of cyclophillidea

A

4 acetabula

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6
Q

Successful treatment from cestodes

A

Recovery of scolex and neck

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7
Q

Shortest cestode and its number of proglottids

A

Echinococcus granulosus (3 segments)

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8
Q

Largest cestode and its number of proglottids

A

Diphyllobothrium latum (3000 segments)

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9
Q

3 important proglottids

A
  1. Immature
  2. Mature
  3. Gravid
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10
Q

Proglottid that is sexually underdeveloped

A

Immature proglottids

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11
Q

Proglottid that has complete set of reproductive structure but no eggs are present

A

Mature proglottids

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12
Q

Proglottid that has presence of uterus filled with eggs

A

Gravid proglottids

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13
Q

Classification of gravid segments: (4)

A

Apolytic
Anapolytic
Craspedote
Acraspedote

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14
Q

Segments lyse/rupture to release egg

A

Apolytic

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15
Q

Segments do not rupture

A

Anapolytic

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16
Q

Segments overlap

A

Craspedote

17
Q

Segments do not overlap

A

Acraspedote

18
Q

In anapolytic gravid segments, how are eggs released?

A

Through the uterine pore

19
Q

Budding or growth zone of cestodes

A

Neck

20
Q

Cestodes in pseudophyllidea: (2)

A

D. latum
Spirometra

21
Q

Cestodes in cyclophillidea: (4)

A

Taenia spp.
Hymenolepis nana
Hymenolepis diminuta
Echinococcus granulosus

22
Q

Bump-like protrusion in the scolex; retractable

A

Rostellum

23
Q

Pseudo vs. Cyclo

Scolex

A

P: Spatulate with bothria (false sucker)
C: Globular Scolex with 4 acetabula

24
Q

Pseudo vs. Cyclo

Gravid Segments

a. Genital pore
b. Uterine pore
c. Apolysis

A

Pseudo:
a. Central portion
b. Central
c. X- but it is capable of Anapolytic

Cyclo:
a. Lateral
b. None
c. capable of apolysis

25
Q

Pseudo vs. Cyclo

Eggs

A

P: Operculate, Immature
C: Non-operculated, Mature

pa r a r a (4 decks)

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