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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
It may be globular or spatulate/spoon shaped
SCOLEX HEAD
26
This is the cestode specie with almond shaped / spoon spatulate scolex and Its scolex has 2 false suckers called bothria
DIPHYLLOBOTRIUM LATUM
27
GLOBULAR SCOLEX WITH HOOKLETS
Taenia solium, Hymenolepis nana, Dipylidium caninum, Echinococcus granulosus
28
GLOBULAR SCOLEX WITHOUT HOOKLETS
Taenia saginata, Hymenolepis diminuta
29
Scolex is 1-2 mm, 4 suckers, No hooklelts and 5–10m long
TAENIA SAGINATA TAPEWORM BODY
30
mature segments with Accessor Ovarian Lobe
Taenia solium
31
mature segments with Bilateral Genital Pores
Dipylidium caninum
32
With Rosette shaped uterus
Diphyllobothrium latum
33
With saccular uterus
Hymenolepis nana & Hymenolepis diminuta
34
Uterus is loosely twisted/coiled
Echinococcus granulosus
35
Uterus disintegrated into Egg Packets
Dipylidium caninum
36
Elongated uterus with 8-12 lateral uterine branches
Taenia solium
37
Elongated uterus with 15-30 lateral uterine branches
Taenia saginata
38
3 - 10 meters, may have more than 3,000 segments
Diphyllobothrium latum
39
2-8 meters occasionally 8 meters, may produce 800 - 1000 segments
Taenia solium
40
5-10 meters occasionally 10 meters, may produce 1000- 2000 segments
Taenia saginata
41
20 - 60 cm. may produce 800- 1000 segments 300 - 600 X 4 mm. in size
Hymenolepis diminuta
42
1-4 cm. or 40 x 0.5-0.9 mm. may produce 200 segments
Hymenolepis nana
43
10 - 70 cm. may produce 60 - 175 segments
Dipylidium caninum
44
3-8 mm. with only 3 segments
Echinococcus granulosus
45
30 – 36 hooks in two rows, 4 suckers, With 3 Proglottids (Immature, Mature,Gravid), Length 3-8 mm
ECHINOCOCCUS GRANULOSUS ADULT
46
PRODUCES NON-OPERCULATED EGG
Taenia solium, Taenia saginata, Hymenolepis diminuta, Echnicoccus granulosus, Hymenolepis nana, Dipylidium caninum
47
PRODUCES OPERCULATED EGGS
Diphyllobothrioum latum
48
The only tapeworm that produces operculated egg
DIPHYLLOBOTHRIUM LATUM / OVA
49
New Name: Dibothriocephalus latus
DIPHYLLOBOTHRIUM LATUM / OVA
50
Similar to those of P. westermani
DIPHYLLOBOTHRIUM LATUM / OVA
51
Their eggs are indistinguishable
TAENIA SOLIUM & TAENIA SAGINATA OVA
52
Same with those of Taenia spp. But never seen in human feces.
ECHINOCOCCUS GRANULOSUS OVA
53
With polar thickenings that give rise to 4 - 8 polar filaments
HYMENOLEPIS NANA OVA
54
With polar thickenings but no polar filaments
HYMENOLEPIS DIMINUTA OVA
55
Provided with intralaminal layer giving the egg a "fried egg appearance"
HYMENOLEPIS DIMINUTA OVA
56
Eggs are usually seen in packets (15-25 eggs)
DIPYLIDIUM CANINUM EGG PACKET
57
An individual egg measures 35 - 60 u in diameter contains an oncosphere with 6 hooks
DIPYLIDIUM CANINUM EGG PACKET
58
Ingestion of Plerocercoid larva can lead to Diphyllobothriasis an intestinal infection which can be detected in the in the lab thru stool exam
DIPHYLLOBOTHRIUM LATUM
59
man serves as Definitive host
Diphyllobothriasis
60
man serves as Intermediate host
Sparganosis
61
man do not serve as definitive host, so man does not harbor the adult worm
ECHINOCOCCUS GRANULOSUS

Parasitology (1 decks)

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