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Parasitology > CESTODES > Flashcards

CESTODES Flashcards

1
Q

No digestive / circulatory system

A

CESTODES / TAPEWORMS

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2
Q

Average life span of tapeworm

A

20 years

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3
Q

All are heteroxenous except

A

Hymenolepis nana
(homoxenous)

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4
Q

What tapeworm inhabits the intestinal tract

A

Adult tapeworm

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5
Q

With flattened “ribbon like” segmented

A

Cestodes/Tapeworms

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6
Q

Fish Broad Tapeworm / Russian Broad Tapeworm

A

Diphyllobotrium latum

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7
Q

Diphyllobotrium latum is under?

A

PSEUDOPHYLLIDEA

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8
Q

Scolex with bothria, with or without hooks, never with suckers

A

PSEUDOPHYLLIDEA

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9
Q

Scolex with 4 suckers

A

CYCLOPHYLLIDEA

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10
Q

Requires 3 host (1 Definitive Host and 2 Intermediate Hosts)

A

DIPHYLLOBOTHRIUM LATUM

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11
Q

Proglottids are anapolytic

A

PSEUDOPHYLLIDEA

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12
Q

Proglottids are apolytic

A

CYCLOPHYLLIDEA

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13
Q

Produce operculated and immature eggs

A

PSEUDOPHYLLIDEA

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14
Q

Produce non-operculated and immature eggs

A

CYCLOPHYLLIDEA

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15
Q

Embryo: Coracidium

A

PSEUDOPHYLLIDEA

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16
Q

CYCLOPHYLLIDEA

A

Embryo: Hexacanth

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17
Q

3 hosts of DIPHYLLOBOTHRIUM LATUM

A

*Definitive Host – Man
*First Intermediate Host – Fresh water crustaceans
(Copepods, cyclops)
*Second Intermediate Host – Fresh water fishes
(pike, eel, trout)

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18
Q

Usually Homoxenous and man may act both as Definitive and as Intermediate
Host

A

HYMENOLEPIS NANA

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19
Q

Intermediate hosts of HYMENOLEPIS NANA.

A

*Human flea (Pulex irritans)
*Rat flea (Xenopsylla cheopis)
*Dog flea (Ctenophalides canis)
*Cockroaches (B. germanica)
*Rice and Flour Beetles (Tenebrio spp.)

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20
Q

organ adapted for attachment; may be equipped with rostellum and hooklets

A

SCOLEX / HEAD

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21
Q

budding zone consisting of germinative tissues

A

NECK

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22
Q

contains undeveloped sexual organs

A

Immature

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23
Q

with complete sets of reproductive structures

A

Mature

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24
Q

where uterus are demonstrated (filled with eggs) undergoes detachment

A

Gravid/Ripe

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25
Q

It may be globular or spatulate/spoon shaped

A

SCOLEX HEAD

26
Q

This is the cestode specie with almond shaped / spoon spatulate scolex and Its scolex has 2 false suckers called bothria

A

DIPHYLLOBOTRIUM LATUM

27
Q

GLOBULAR SCOLEX WITH HOOKLETS

A

Taenia solium, Hymenolepis nana, Dipylidium caninum, Echinococcus
granulosus

28
Q

GLOBULAR SCOLEX WITHOUT HOOKLETS

A

Taenia saginata, Hymenolepis diminuta

29
Q

Scolex is 1-2 mm, 4 suckers, No hooklelts and 5–10m long

A

TAENIA SAGINATA TAPEWORM BODY

30
Q

mature segments with Accessor
Ovarian Lobe

A

Taenia solium

31
Q

mature segments with Bilateral Genital Pores

A

Dipylidium caninum

32
Q

With Rosette shaped uterus

A

Diphyllobothrium latum

33
Q

With saccular uterus

A

Hymenolepis nana & Hymenolepis diminuta

34
Q

Uterus is loosely twisted/coiled

A

Echinococcus granulosus

35
Q

Uterus disintegrated into Egg Packets

A

Dipylidium caninum

36
Q

Elongated uterus with 8-12 lateral uterine branches

A

Taenia solium

37
Q

Elongated uterus with 15-30 lateral uterine branches

A

Taenia saginata

38
Q

3 - 10 meters, may have more than 3,000 segments

A

Diphyllobothrium latum

39
Q

2-8 meters occasionally 8 meters, may produce 800 - 1000 segments

A

Taenia solium

40
Q

5-10 meters occasionally 10 meters, may produce 1000- 2000 segments

A

Taenia saginata

41
Q

20 - 60 cm. may produce 800- 1000 segments 300 - 600 X 4 mm. in size

A

Hymenolepis diminuta

42
Q

1-4 cm. or 40 x 0.5-0.9 mm. may produce 200 segments

A

Hymenolepis nana

43
Q

10 - 70 cm. may produce 60 - 175 segments

A

Dipylidium caninum

44
Q

3-8 mm. with only 3 segments

A

Echinococcus granulosus

45
Q

30 – 36 hooks in two rows, 4 suckers, With 3 Proglottids (Immature, Mature,Gravid), Length 3-8 mm

A

ECHINOCOCCUS GRANULOSUS ADULT

46
Q

PRODUCES NON-OPERCULATED EGG

A

Taenia solium, Taenia saginata, Hymenolepis diminuta, Echnicoccus granulosus, Hymenolepis nana, Dipylidium caninum

47
Q

PRODUCES OPERCULATED EGGS

A

Diphyllobothrioum latum

48
Q

The only tapeworm that produces operculated egg

A

DIPHYLLOBOTHRIUM LATUM / OVA

49
Q

New Name: Dibothriocephalus latus

A

DIPHYLLOBOTHRIUM LATUM / OVA

50
Q

Similar to those of P. westermani

A

DIPHYLLOBOTHRIUM LATUM / OVA

51
Q

Their eggs are indistinguishable

A

TAENIA SOLIUM & TAENIA SAGINATA OVA

52
Q

Same with those of Taenia spp. But never seen in human feces.

A

ECHINOCOCCUS GRANULOSUS OVA

53
Q

With polar thickenings that give rise to 4 - 8 polar filaments

A

HYMENOLEPIS NANA OVA

54
Q

With polar thickenings but no polar filaments

A

HYMENOLEPIS DIMINUTA OVA

55
Q

Provided with intralaminal layer giving the egg a “fried
egg appearance”

A

HYMENOLEPIS DIMINUTA OVA

56
Q

Eggs are usually seen in packets (15-25 eggs)

A

DIPYLIDIUM CANINUM EGG PACKET

57
Q

An individual egg measures 35 - 60 u in diameter
contains an oncosphere with 6 hooks

A

DIPYLIDIUM CANINUM EGG PACKET

58
Q

Ingestion of Plerocercoid larva can lead to Diphyllobothriasis an intestinal infection which can be detected in the in the lab thru stool exam

A

DIPHYLLOBOTHRIUM LATUM

59
Q

man serves as Definitive host

A

Diphyllobothriasis

60
Q

man serves as Intermediate host

A

Sparganosis

61
Q

man do not serve as definitive host, so man does not harbor the adult worm

A

ECHINOCOCCUS GRANULOSUS

Parasitology (1 decks)

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