(F) Cestodes - lesson 1 (lecture-based) Flashcards

1
Q
  • flat
  • ribbon like chain
  • can reach lengths up to 10m or more and have hundreds of segments
  • Each segment releases thousands of eggs
A

Cestodes

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2
Q

Cestode AKA

A

tapeworms

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3
Q

They have ribbon like chain segments called?

A

proglottids

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4
Q

The whole segment is called

Gravid

A

STROBILA

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5
Q

Enumerate the basic structure of a cestode

A

o Scolex (head)
o Neck region
o Immature proglottids
o Mature proglottids
o Gravid proglottids

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6
Q

2 TYPES OF TAPEWORMS

A

Pseudophyllidean & Cyclophyllidea

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7
Q

PSEUDOPHYLLIDEA or CYCLOPHYLLIDEA

Scolex: Spatulate/ flattened spatulate
Mature proglottids: Broad/widen
Gravid proglottids: Has uterine branches that contains eggs
Eggs: Operculum (cap like) Oval in shape

A

PSEUDOPHYLLIDEA

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8
Q

PSEUDOPHYLLIDEA or CYCLOPHYLLIDEA

Scolex: Rhomboid/ quadrate
Mature proglottids: Longer Has genital pore
(contains testis, uterine, and ovaries)
Gravid proglottids: Has uterine branches that contains eggs
Eggs: No operculum Spherical in shape Presence of truncated prisms (characteristic of taenia spp.)

A

CYCLOPHYLLIDEA

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9
Q

Scolex:

  1. 2 ventral suckers
  2. rhomboid/ quadrate shape with 4 ventral suckers; also has a presence of rostellum (may or may not have hooks)
    A. PSEUDOPHYLLIDEA
    B. CYCLOPHYLLIDEA
A

A, B

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10
Q

PSEUDOPHYLLIDEA or CYCLOPHYLLIDEA

Mature Proglottid:

  1. broad and wide; has a ventral genital pore
  2. longer and has a lateral genital pore

A. PSEUDOPHYLLIDEA
B. CYCLOPHYLLIDEA

A

A, B.

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11
Q

Gravid proglottid:
1. more concentrated at the center
2. several branching
3. Taenia solium and Taenia saginata
4. Diphyllobothrium latum
A. PSEUDOPHYLLIDEA
B. CYCLOPHYLLIDEA

u may repeat answers

A

A, B, B, A

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12
Q

Pseudophyllidea

▪ Wider proglottid
▪ Branching of uterus

A

Diphyllobothrium latum

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13
Q

Cyclophyllidea

Uterine branches of T. solium and T. saginata

A

15-20, 7-13

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14
Q

Egg: Operculated

A. PSEUDOPHYLLIDEA
B. CYCLOPHYLLIDEA

A

A

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15
Q

Solid form of Larva (2)

A

Procercoid & Plerocercoid

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16
Q

Cystic/ vesicular form (4)

A
  • Cysticercus
  • Cysticercoid
  • Coenurus
  • Hydatis/echinococcus
17
Q

DIPHYLLOBOTHRIUM LATUS
* it is previously known as?
* Common name:
* Disease:
* Global distribution (GD):
* Habitat:
* Length:
* Infective stage to humans:

A
  • Diphyllobothrium latum
  • broad or fish tapeworm
  • diphyllobothriasis
  • Northern Italy, England, Sweden
  • predominantly the ileum also the jejunum
  • 3 to 10m in length
  • Plerocercoid larvae
18
Q
  • Scolex
    o Spatulate shaped
    o With 2 ventral suckers
  • Mature proglottids
    o wide, broad
    o reproductive organs at the center
  • Egg
    o Operculated (cap like)
    o Oval in shape
    Coracidium
    o Significant in the life cycle

can reach up to 10m

A

DIPHYLLOBOTHRIUM LATUS

19
Q

DIPHYLLOBOTHRIUM LATUS

MOT to humans

A

Ingestion of plerocercoid larvae from improperly cooked fish

20
Q

DIPHYLLOBOTHRIUM LATUS

Habitat (adult)

A

smoll intestine

21
Q

DIPHYLLOBOTHRIUM LATUS

A
22
Q

DIPHYLLOBOTHRIUM LATUS

A
23
Q

DIPHYLLOBOTHRIUM LATUS

A
24
Q

DIPHYLLOBOTHRIUM LATUS

A
25
Q

DIPHYLLOBOTHRIUM LATUS

A