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3-2 Intestinal Nematodes Flashcards

(59 cards)

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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?

Study These Flashcards
A

RR, intensity, number of eggs

25
t or f? negative stool exam during larval migration via blood stream.
true (others: male, sexually immature)
26
where do ascaris worms develop into adult worms?
small intestines
27
community based chemotherapy of ascaris
every 4 months for 3 years
28
most common source of infection
soil contaminated food/raw vegetables
29
new world hookworm
necator americanus
30
cat hookworm
ancylostoma brazileinse
31
opposite curved posterior end
necator americanus
32
2 larval forms of hookwormss
rhabditiform and filariform
33
hookworm infective stage to man
filariform
34
inconspicious buccal spears of filariform
ancylostoma
35
t or f? differentiation of eggs of hookworms is easy.
false
36
N americanus requires this phase
transpulmonary phase
37
may also occur in the oral and transmammary routen
a. duodenale
38
a zoonotic infection cause by a. caninus and a. braziliense
cutaneous larva migrans
39
allowing for hatching of larval eggs to a filter paper
harada-mori
40
favorable for infection of hookworms
sandy loam type
41
96% of hookworm infecdtions
new world/ necator americanus
42
infection run parallel w hookworm infection
Strongyloides
43
short buccal lip w 4 indistinct lips
adult s. stercoralis
44
cochin china diarrhea
s. stercoralis
45
filariform s. stercoarlis infect the perianal area
external autoinfection
46
describe lesion of s. stercoralis
hemorrhagic papules
47
more fecally transmitted than oral
s. stercoralis
48
true or false? egg reduction rate cant be determined in stercoralis
true, only larvae is seen in stool
49
eggs are peanut shaped with straited shell and bipolar plug
capillaria
50
dse cause by capillaria
severe protein losing enteropathy; decreased xylose
51
pinworm inner membrane for?
chemical protection
52
true or falso? some eggs of pinworn can become air borne and get inhaled
true
53
3 forms of pathogenesis by pinworm
site of attachment of worm; egg deposition in perianal area migrating adults
54
pruritus ani d/t
eggs
55
vulvovaginitis and salpingitis d/t
migrating adults
56
diagnosis for e vermicularis
scotch tape swab
57
DOC for E vermicularis
pyrantel pamoate
58
no heart-lung migration
trichuris
59
what type of soil for trichuris?
clayish

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