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Para > 3-2 Intestinal Nematodes > Flashcards

3-2 Intestinal Nematodes Flashcards

1
Q

eggs are deposited and embryo develops outside the body

A

oviparous

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2
Q

viviparous nematode

A

c. philippinesis

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3
Q

parthenogenetic means?

A

produce eggs without male

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4
Q

example of parthegenetic

A

s. stercoralis

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5
Q

autoinfection possible w?

A

CES
c. philippinensis
E. vermicularis
S. Stercoralis

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6
Q

transimission thru inhalation

A

AE(american eagle)
Ascaris
Enterobius

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7
Q

has terminal mouth with 3 lips and sensory papillae

A

Ascaris

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8
Q

t or F? ascaris attach to intestinal wall?

A

False

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9
Q

reproductive potential of ascaris

A

240K eggs/day

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10
Q

ascaris with curves posterior end

A

male worm

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11
Q

types of eggs of ascaris

A

fertilized (corticated and decorticated;

unfertilized

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12
Q

fertilized = inner membrane of ascaris? middle? outer?

A

non permeable lipoidal vitellline;
glycogen layer;
outer - albuminoid/mammilated

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13
Q

decorticated means?

A

absent outer mamillated membrane

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14
Q

unfertilized eggs vs fertilized?

A

1st 2 layers absent ( inner and middle)

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15
Q

mamillated coating has what feature?

A

refractile granules

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16
Q

t or f? unfertilized eggs undergo further development in soil.

A

False, never.

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17
Q

t or f? when unfertilized eggs are ingested they can be infective

A

false

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18
Q

environemntal conditions for ascaris

A

moist, shaded, warm

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19
Q

allergic eosinophilic infiltration of lungs

A

loeffler

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20
Q

when ascaris enter the eustachian tube?

A

otitis media

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21
Q

severe colicky abdominal pain d/t migrating ascaris

A

biliary ascariasis

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22
Q

what form of ascaris causes gall stones ?

A

eggs

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23
Q

qualitative method of diagnosis

A

kato technique

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24
Q

advantages of kato katz?

A

RR, intensity, number of eggs

25
Q

t or f? negative stool exam during larval migration via blood stream.

A

true (others: male, sexually immature)

26
Q

where do ascaris worms develop into adult worms?

A

small intestines

27
Q

community based chemotherapy of ascaris

A

every 4 months for 3 years

28
Q

most common source of infection

A

soil contaminated food/raw vegetables

29
Q

new world hookworm

A

necator americanus

30
Q

cat hookworm

A

ancylostoma brazileinse

31
Q

opposite curved posterior end

A

necator americanus

32
Q

2 larval forms of hookwormss

A

rhabditiform and filariform

33
Q

hookworm infective stage to man

A

filariform

34
Q

inconspicious buccal spears of filariform

A

ancylostoma

35
Q

t or f? differentiation of eggs of hookworms is easy.

A

false

36
Q

N americanus requires this phase

A

transpulmonary phase

37
Q

may also occur in the oral and transmammary routen

A

a. duodenale

38
Q

a zoonotic infection cause by a. caninus and a. braziliense

A

cutaneous larva migrans

39
Q

allowing for hatching of larval eggs to a filter paper

A

harada-mori

40
Q

favorable for infection of hookworms

A

sandy loam type

41
Q

96% of hookworm infecdtions

A

new world/ necator americanus

42
Q

infection run parallel w hookworm infection

A

Strongyloides

43
Q

short buccal lip w 4 indistinct lips

A

adult s. stercoralis

44
Q

cochin china diarrhea

A

s. stercoralis

45
Q

filariform s. stercoarlis infect the perianal area

A

external autoinfection

46
Q

describe lesion of s. stercoralis

A

hemorrhagic papules

47
Q

more fecally transmitted than oral

A

s. stercoralis

48
Q

true or false? egg reduction rate cant be determined in stercoralis

A

true, only larvae is seen in stool

49
Q

eggs are peanut shaped with straited shell and bipolar plug

A

capillaria

50
Q

dse cause by capillaria

A

severe protein losing enteropathy; decreased xylose

51
Q

pinworm inner membrane for?

A

chemical protection

52
Q

true or falso? some eggs of pinworn can become air borne and get inhaled

A

true

53
Q

3 forms of pathogenesis by pinworm

A

site of attachment of worm;
egg deposition in perianal area
migrating adults

54
Q

pruritus ani d/t

A

eggs

55
Q

vulvovaginitis and salpingitis d/t

A

migrating adults

56
Q

diagnosis for e vermicularis

A

scotch tape swab

57
Q

DOC for E vermicularis

A

pyrantel pamoate

58
Q

no heart-lung migration

A

trichuris

59
Q

what type of soil for trichuris?

A

clayish

Para (7 decks)

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