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Nematodes: Class Secernentia Flashcards

TISSUE ROUNDWORMS

1
Q

What parasite is called the DOG ASCARIA or DOG ROUNDWORM?

A

Toxocara canis

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2
Q

What parasite is called the CAT ASCARIA or CAT ROUNDWORM?

A

Toxocara cati

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3
Q

What is the IS of Toxocara spp?

A

Embryonated egg

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4
Q

What is the DS of Toxocara spp.?

A

Larva

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5
Q

Toxocara spp. causes what clinical manifestations?

A

Visceral & ocular larva migrans

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6
Q

A parasite that has an ARROWHEAD CA

A

Toxocara cati

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7
Q

A parasite that has a BOW CA

A

Toxocara canis

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8
Q

Dioctophyma renale is also called as the ___________

A

GIANT KIDNEY WORM

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9
Q

What is the intermediate host of D. renale?

A

Common Mud Worm

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10
Q

What is the specimen needed for D. renale diagnosis?

A

Urine

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11
Q

What parasite causes Eosinophilic Myeloencephalitis, Gnathostomiasis, and VLM-like syndrome?

A

Gnathostoma spinigerum

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12
Q

What is the Rat Lungworm?

A

Angiostrongylus cantonensis

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13
Q

The uterine tubes of A. cantonensis female worm has what appearance?

A

Barber’s Pole appearance

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14
Q

A. cantonensis Definitive Host

A

Rat

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15
Q

What is the accidental host of A. cantonensis?

A

Man

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16
Q

When an A. cantonesis larvae is ingested, they migrate to the brain and spinal cord, producing what kind of infection?

A

Eosinophilic Meningoencephalitis

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17
Q

What is the other name for W. bancrofti?

A

Bancroft’s Filiaria

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18
Q

B. malayi other names?

A

Brugian Filaria
Malayan’s Filaria

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19
Q

Loa Loa other name?

A

African Eye Worm

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20
Q

The Blinding Worm, Convoluted Filaria is what king of parasite?

A

Onchocerca volvulus

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21
Q

What is the old name for Mansonella streptocerca?

A

Streptocerca streptocerca

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22
Q

What kind of filaria causes filariasis of the lower extremities?

A

W. bancrofti

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23
Q

W. bancroftican cause what kind of disease?

A

Elephantiasis
Chylochoele
Chyluria
TPE (Tropical PUlmonary Eosinophilia)

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24
Q

This causes filariasis of the upper extremities.

A

B. malayi

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25
Q

Loaloa causes what disease?

A

Calabar Swelling, Fugitive swelling

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26
Q

What parasite causes Blinding filariasis, River Blindness, Hanging groin, & Leopard skin?

A

O. volvulus

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27
Q

Onchocercomata is caused by what parasite?

A

O. volvulus

28
Q

What are the diseases caused by the M. perstans?

A

Calabar-like swelling
Kampala
UGANDAN EYE WORM

29
Q

M. streptocerca causes what disease?

A

Pruritic dermatitis

30
Q

What is the vector for O. volvulus?

A

Black fly/ Buffalo gnat

31
Q

Loaloa is carried by what vector?

A

Chrysops (Mango fly, Deer fly, tabanid fly)

32
Q

What filaria that has a graceful appearance?

A

W. bancrofti

33
Q

What filaria that has a kinky appearance?

34
Q

What is Dirofilaria immitis’ simple name?

A

Dog heartworm

35
Q

What parasite is known to be the longest nematode of man?

A

D. medinensis

36
Q

List the simple names for D. medinensis

A

Guinea worm
Fiery Serpent of Israelites
Serpent worm
Medina worm

37
Q

What is the intermediate host for D. medinensis?

A

Cyclops/ Copepods/ Water Fleas

38
Q

Anisakis is also called the _____

A

Herring’s worm

39
Q

A person can be infected with Anisakis by what mode of transmission?

A

Ingestion of raw fish

40
Q

Anisakis Definitive host

A

Whales & Dolphins

41
Q

The Anisakis parasite has 3 intermediate hosts, what are those?

A

Copepods > small fishes > larger fishes

42
Q

What is the accidental host of Anisakis?

43
Q

This parasite causes ulcer, on contact with water, releases larvae.

A

D. medinensis

44
Q

DS of D. medinensis?

A

Adult worm

45
Q

What is the periodicity of W. bancrofti?

A

Nocturnal (10pm-2AM), Diurnally subperiodic

46
Q

What filaria is nocturnally subperiodic?

47
Q

Periodicity of Loaloa?

48
Q

M. perstans Periodicity?

49
Q

Manzonella ozardi periodicity?

50
Q

What method is used in Onchocerca volvulus?

A

Mazzoti test

51
Q

What method is used in M. streptocerca?

A

Mazzoti test

52
Q

What filaria uses skin snips as specimen for testing?

A

M. streptocerca
Onchocerca volvulus

53
Q

This filaria has a kinky appearance, how many nuclei at the tip is present?

54
Q

What filaria has irregularly spaced nuclei to the tip?

55
Q

This filaria has nuclei extended to the tip?

A

M. perstans

56
Q

What filaria is describes as the SHEPHERD’S CROOK/ WALKING STICK?

A

M. streptocerca

57
Q

M. streptocerca has how many nuclei at the tip?

A

nuclei almost at the tip

58
Q

M. perstans preferred habitat?

59
Q

What is the vector of the Mansonella spp.?

A

Biting midges (Culicoides)

60
Q

W. bancroft & B. malayi vectors?

61
Q

The Bancroft’s filaria & Malayan filaria tend to inhabit in what part of the human body?

A

Lymphatics

62
Q

What is the paratenic hosts of D. renal?

A

Fish, Frogs

63
Q

This parasite (nematode) is rust colored, and has 4 rows of hooks on bulb?

A

G. spinigerum

64
Q

What parasite is blood-red, has bell-shaped burse with spicule that destroys the kidney tissue?

A

D. renale (Giant kindey Worm)

65
Q

Toxocariasis uses what method to diagnose?

Parasitology (5 decks)

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