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Parasitology Midterms > Intestinal Nematodes Ascaris lumbricoides > Flashcards

Intestinal Nematodes Ascaris lumbricoides Flashcards

0
Q

Large intestine habitat

A

Vermicuralis

Trichiura

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1
Q

Small intestine habitat

A

Philippinensis
Lumbricoides
Stercoralis
Hookworms

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2
Q

Lymphnodes, glands, vessel

A

Filarial worms

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3
Q

Muscles

A

Spiralis

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4
Q

Meninges

A

Cantonensis

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5
Q

Oviparous

A 
Egg laying
Lumbricoides
Trichiura
Hookworms
Vermicularis
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6
Q

Viviparous or larviparous

A

Giving birth to larva
Bancrofti
Malayi
Spiralis

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7
Q

Oviviparous

A

Laying eggs containing larvae that immediately hatched out

Stercoralis

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8
Q

The most common intestinal nematode of man or giant intestinal roundworm

A

Ascaris lumbricoides

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9
Q

Most common intestinal roundworm among children

A

Ascaris lumbricoides

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10
Q

Ascaris lumbricoides

Morphology

A

White or pink
Smooth strated muscles
Faint longitudinal line

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11
Q

Ascaris lumbricoides

Size of male worm

A

10-30cm

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12
Q

Ascaris lumbricoides

How many spicules

A

2

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13
Q

Ascaris lumbricoides

Describe the male tubule

A

Single, long and tortuos

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14
Q

Ascaris lumbricoides

Size of female worm

A

22-35cm

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15
Q

Ascaris lumbricoides

Where do you find the paired reproductive organ

A

Posterior 2/3

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16
Q

Ascaris lumbricoides

How many vagina

A

1 that branch to pair of genital tubules

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17
Q

Ascaris lumbricoides

Describe the mouth and the lips

A

1 mouth, 3 lips with sensory papilae

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18
Q

Ascaris lumbricoides

What is the sized of fertilized egg

A

Golden brown

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19
Q

Ascaris lumbricoides

The innermost of fertilized egg is called?

A

Vitelline layer

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20
Q

Ascaris lumbricoides

Which maybe absent or loss in decorticated eggs

A

Mammilated albuminous

21
Q

Ascaris lumbricoides

Size of unfertilized egg

A

88-94 micrometer by 39-44 micrometer

22
Q

What is the size of fertilized eggs

A

47-70 micrometer by 35-50 micrometer

23
Q

Ascaris lumbricoides

Egg shell of unfertilized egg

A

With little or no outer albuminoid coat

24
Q

Ascaris lumbricoides

Described the yolk of unfertilized egg

A

Disorganized, appear as tiny bubbles

25
Q

Ascaris lumbricoides

Size of decorticated fertilized egg

A

45-70 by 35-50

26
Q

Ascaris lumbricoides

Describe the eggshell of decorticated

A

2 layer, transparent, albumionous coat

27
Q

Ascaris lumbricoides

Describe the yolk of decorticated

A

Organized

28
Q

Ascaris lumbricoides

Eggshell of embryonated egg

A

Trilaminar

29
Q

Ascaris lumbricoides

Whats is the color of embryonated egg

A

Brownish to yellow

30
Q

Ascaris lumbricoides

Embryonated egg contains

A

Coiled larva inside

31
Q

Ascaris lumbricoides

What is the infective stage?

A

Fully embryonated egg

32
Q

Ascaris lumbricoides

Parhway

A 
Igested eggs
Small intestine
Intestinal wall
Venules
Liver
Heart
Pulmonary vessels
33
Q

Ascaris lumbricoides

In the lungs, larva undergo _________ before migrating to the larynx to be swallowed into digestive tract

A

Molting

34
Q

Ascaris lumbricoides

How many days migrating and molting phase

A

7-10days

35
Q

Ascaris lumbricoides

Prepatent period

A

60-70days

36
Q

Ascaris lumbricoides

How many weeks for the egg to develop into infective stage

A

2-3 weeks

37
Q

Ascaris lumbricoides

Larva reaches _____ when it molts within the egg

A

3rd stage

38
Q

Ascaris lumbricoides

If eggs are swallowed, they hatch in the?

A

Duodenum

39
Q

Ascaris lumbricoides

Mature female worms produce

A

200,000 eggs

40
Q

Ascaris lumbricoides

Ingestion of large number of infevtive eggs may provoke

A

Pneumonitis

41
Q

Ascaris lumbricoides

Pneumonitis may occur from

A

4 days to 2 weeks

42
Q

Ascaris lumbricoides

Sensitive persons may develop

A

Asthma attacks

43
Q

Ascaris lumbricoides

Moderate infection

A

Symptomatic lactose intolerance

44
Q

Ascaris lumbricoides

Heavy infection

A

Bowel obstruction

45
Q

Ascaris lumbricoides

Increase peak of eosinophilla

A

Re enter the gut

46
Q

Ascaris lumbricoides

Increase lavel of

A

IgG and IgE

47
Q

Ascaris lumbricoides

Sphincter of oddi or migrate up the billary tree producing

A

Acute abdominal pain, gallstone, pancreatitis

48
Q

Ascaris lumbricoides

Diagnosis

A

Direct fecal smear, concentration technique, barium meal examination

49
Q

Ascaris lumbricoides

Treatment

A

Albendazole 400mg single oral dose
Albendazole 200 mg for children <2
Mebendazole 100 mg 2x a day for 3days

50
Q

Ascaris lumbricoides

Alternate treatment

A

Pyrantel pamoate 11 mg/kg

Parasitology Midterms (6 decks)

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