MT 26 (LEC): Cestodes

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75 Terms

1
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True or False: Diphyllobothrium latum eggs are operculated and unembryonated.

True.

2
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Fill in the blank: The is the muscular organ responsible for attachment of cestodes.

Scolex.

3
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Identify the cestode with a rosette-shaped uterus.

Diphyllobothrium latum.

4
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True or False: Hymenolepis nana may not require an intermediate host.

True.

5
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What is the infective stage of Taenia solium to humans?

Cysticercus cellulosae larvae

6
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Fill in the blank: is the term for detachment of gravid proglottids containing mature eggs.

Apolysis.

7
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Identify the only cestode with bilateral genital pores.

Dipylidium caninum.

8
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True or False: All female cestodes are oviparous.

True.

9
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What cestode causes cystic echinococcosis or hydatid disease in humans?

Echinococcus granulosus.

10
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Fill in the blank: is the common name for Hymenolepis nana.

Dwarf tapeworm.

11
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What is the infective stage of Dipylidium caninum?

Cysticercoid larvae in flea.

12
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Identify the larval form of Multiceps multiceps that contains multiple scolices.

Coenurus.

13
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True or False: Autoinfection is possible in Hymenolepis nana.

True.

14
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What cestode infection resembles carcinoma due to its aggressive cystic invasion of the liver?

Echinococcus multilocularis.

15
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Fill in the blank: is the term for proglottids that do not overlap.

Acraspedote.

16
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True or False: Taenia saginata and Taenia solium eggs are morphologically indistinguishable.

True.

17
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Identify the definitive host of Echinococcus granulosus.

Dogs.

18
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Fill in the blank: The larval form of Echinococcus is responsible for hydatid cysts in humans.

Hydatid cyst (Cysticercus).

19
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What tapeworm has a scolex with four suckers and a rostellum with hooks?

Taenia solium.

20
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True or False: Diphyllobothrium latum infection is associated with vitamin B12 deficiency.

True.

21
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Fill in the blank: The is the smallest tapeworm capable of autoinfection.

Hymenolepis nana.

22
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Identify the cestode that uses fleas as intermediate hosts.

Dipylidium caninum.

23
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True or False: Gravid proglottids of Taenia saginata are motile and expelled singly.

True.

24
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What cestode infection presents as large cysts in the liver or lungs on imaging?

Echinococcosis.

25
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Fill in the blank: are the intermediate hosts in the life cycle of Diphyllobothrium latum.

Copepods and freshwater fish.

26
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True or False: All cestodes lack a digestive tract.

True.

27
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Fill in the blank: The is the head-like structure that anchors cestodes to the intestinal wall.

Scolex.

28
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Identify the cestode known for causing neurocysticercosis.

Taenia solium.

29
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What larval form is found in hydatid cysts of Echinococcus granulosus?

Protoscolices.

30
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True or False: Cysticercosis is caused by ingestion of Taenia solium eggs.

True.

31
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Fill in the blank: The larval stage of Diphyllobothrium latum infects humans via fish.

Plerocercoid.

32
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What tapeworm produces operculated eggs similar to trematodes?

Diphyllobothrium latum.

33
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True or False: Gravid proglottids of Taenia saginata are motile.

True.

34
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Fill in the blank: is the drug of choice for most cestode infections.

Praziquantel.

35
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Identify the common name for Dipylidium caninum.

Double-pored tapeworm.

36
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What cestode egg is immediately infective upon release?

Hymenolepis nana.

37
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True or False: Autoinfection can occur in Hymenolepis diminuta.

False.

38
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Fill in the blank: Cystic echinococcosis is caused by .

Echinococcus granulosus.

39
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What structure in cestodes is responsible for egg production?

Gravid proglottids.

40
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True or False: Proglottids can be passed in stool independently of the whole worm.

True.

41
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Fill in the blank: The larval form of Taenia saginata is called .

Cysticercus bovis.

42
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Identify the cestode that may cause megaloblastic anemia.

Diphyllobothrium latum.

43
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What is the intermediate host of Taenia solium?

Pig.

44
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True or False: Diphyllobothrium latum can reach over 10 meters in length.

True.

45
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Fill in the blank: larval form is found in infected beetles and ingested by rodents.

Cysticercoid.

46
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What cestode is transmitted by ingestion of infected dog feces?

Echinococcus granulosus.

47
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True or False: Hydatid cysts can rupture and cause anaphylactic shock.

True.

48
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Identify the tapeworm that uses insects like fleas as intermediate hosts.

Dipylidium caninum.

49
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Fill in the blank: is the longest human tapeworm.

Diphyllobothrium latum.

50
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What cestode causes multilocular echinococcosis?

Echinococcus multilocularis.

51
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True or False: Coenurus contains multiple protoscolices in a single cyst.

True.

52
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Fill in the blank: The is the reproductive segment in a cestode.

Proglottid.

53
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What test is used to detect antigens in hydatid disease?

ELISA.

54
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True or False: Taenia eggs are round with radial striations.

True.

55
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Fill in the blank: is the form of Echinococcus found in humans.

Hydatid cyst.

56
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What species causes polycystic echinococcosis?

Echinococcus vogeli.

57
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True or False: Cestodes are hermaphroditic organisms.

True.

58
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Identify the cestode egg that is bile-stained with striated embryophore.

Taenia spp.

59
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Fill in the blank: eggs are operculated and resemble trematode eggs.

Diphyllobothrium latum.

60
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What larval form is flat and leaf-shaped in Diphyllobothrium’s intermediate stage?

Procercoid.

61
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True or False: Human echinococcosis is a dead-end infection.

True.

62
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Fill in the blank: The smallest tapeworm infecting humans is .

Hymenolepis nana.

63
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What cestode has up to 20 lateral uterine branches in its proglottid?

Taenia solium.

64
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True or False: Protoscolex can develop into an adult worm if ingested.

True.

65
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Fill in the blank: The tapeworm is transmitted via arthropod intermediate hosts.

Hymenolepis diminuta.

66
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Identify the tapeworm with rostellum bearing hooks and four suckers.

Taenia solium.

67
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What cestode has bilateral genital pores in each segment?

Dipylidium caninum.

68
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Fill in the blank: shows pseudosegmented appearance and hooked proboscis.

Moniliformis moniliformis.

69
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True or False: Acanthocephalans are thorny-headed worms often confused with tapeworms.

True.

70
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Fill in the blank: In the life cycle of Diphyllobothrium, the first host is a .

Copepod.

71
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Identify the infection acquired by eating raw or undercooked freshwater fish.

Diphyllobothriasis.

72
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True or False: All cestodes require at least one intermediate host.

False.

73
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Fill in the blank: can produce visible cysts in the liver seen on imaging.

Echinococcus spp.

74
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What cestode has a rostellum but no hooks?

Taenia saginata.

75
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True or False: Ingestion of undercooked pork can lead to both taeniasis and cysticercosis.

True.