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172 LE 2 > Medically important cestodes > Flashcards

Medically important cestodes Flashcards

1
Q

Commonly called tapeworms

A

Class Cestoda

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2
Q

Adults inhabit the ____ of vertebrate

A

Small intestine

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3
Q

____ parasitize the tissue of both vertebrates and invertebrates

A

Larva

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4
Q

Head of the organism

A

Scolex

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5
Q

retractable, cone-like structure on anterior end of scolex, sometimes have hooks

A

Rostellum

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6
Q

Long, narrow muscular grooves of pseudophyllidean tapeworms

A

Bothria

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7
Q

Suckers of cyclophyllidean tapeworms

A

Acetabula

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8
Q

Distinct types of proglottids

A
  • Immature - no well-developed organs
  • Mature - Well-developed organs
  • Gravid - Filled with eggs
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9
Q

Sperm is delivered to female organ via ____

A

copulatory spicules

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10
Q

The uterus of pseudophyllidean is ____

A

non-branching

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11
Q

The uterine pore of cyclophyllidean is ____

A

Absent

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12
Q

Dibothriocephalus latus is formerly known as

A

D. latum

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13
Q

Largest tapeworm that can infect human

A

Dibothriocephalus latus

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14
Q

Infective stage of Dibothriocephalus latus

A

Plerocercoid (L2)

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15
Q

1st intermediate host of Dibothriocephalus latus

A

Copepods

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16
Q

2nd intermediate host of Dibothriocephalus latus

A

Fish

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17
Q

Dibothriocephalus latus may cause ____ anemia

A

Pernicious anemia

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18
Q

Vitamin deficiency caused by Dibothriocephalus latus

A

B 12

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19
Q

Treatment for Dibothriocephalus latus

A
  • Praziquantel (preferred)
  • Niclosamide
  • Vitamin B 12 supplements
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20
Q

Spirometra mansoni reproduce in ____

A

canines and felines

21
Q

Humans are ____ hosts of Spirometra mansoni

A

Dead-end

22
Q

1st Intermediate host for Spirometra mansoni

A

Cyclops

23
Q

2nd intermediate host for Spirometra mansoni

A

Fish

24
Q

Ingestion of infected ______ will result in sparganosis

A. Cyclops
B. Fish

A

A. Cyclops

25
Q

H. nana is also called ____

A

dwarf tapeworm

26
Q

Ingestion of ______ from contaminated food and water will cause H. nana infection

A

embryonated eggs

27
Q

Autoinfection of H. nana in immunocompromised individuals may lead to ____

A

Tumors

28
Q

H. diminuta is also called ____

A

Rat tapeworm

29
Q

Intermediate hosts of H. diminuta

A

T.confusum and T. castaneum

30
Q

Infective stage of H. diminuta

A

Cysticercoid larvae

31
Q

H. diminuta most notable clinical manifestation

A

Eosinophilia

32
Q

Treatment for H. diminuta

A
  • Praziquantel
  • Niclosamide
  • Nitazoxanide
33
Q

Also known as Hydatid tapeworm

A

Echinococcus Tapeworm

34
Q

The larval form (protoscolices) of E. granulosus may lodge in various body sites where they form a fluid-filled sac known as a _____

A

hydatid cyst

35
Q

germinal epithelium lining the hydatid membrane produces daughter cysts containing multiple scolices, called a _____

A

Brood capsule

36
Q

Definitive host of E. granulosus

A

Dogs

37
Q

Hydatid cysts are located most often in the _____

A

liver and lungs

38
Q

The presence of a _____ in a person with a
history of exposure to ____ in an area where E. granulosus is endemic suggests a diagnosis of cystis echinococcosis.

A

cyst-like mass
Sheepdogs

39
Q

These treatments replace surgery for cystic echinococcosis

A

Chemotherapy, cyst puncture, and PAIR

40
Q

At the anterior tip of the scolex of E. multilocularis is a ____

A

rostellum

41
Q

In intermediate hosts, the metacestode of E. multilocularis, or larval stage, takes the form of an ____

A

alveolar hydatid cyst

42
Q

Definitive hosts of E. multilocularis

A

Foxes

43
Q

Intermediate hosts of E. multilocularis

A

Small rodents

44
Q

Infective stage of E. multilocularis

A

Embryonated eggs

45
Q

Diagnostic stage of E. multilocularis

A

Alveolar hydatid cyst

46
Q

What cestode follows a ____

A

Prey-predator life cycle

47
Q

Dipylidium caninum is also known as _____

A

Flea tapeworm
Cucumber tapeworm
Double-pored tapeworm

48
Q

Diagnostic stage of D. caninum

A

Gravid proglottids

49
Q

Infective stage of D. caninum

A

cysticercoid-infected adult flea

172 LE 2 (8 decks)

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