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Microbiology > Intestinal And Tissue Nematodes > Flashcards

Intestinal And Tissue Nematodes Flashcards

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Biology 101 flashcards
1
Q

What are the types of Intestinal Nematodes

A

Enterobius Vermicularis
Trichuris Trichiura
Ascaris Lumbricoides
Necator and Ancylostoma
Stronglyloides Stercorolis

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2
Q

How is the transmission of Enterobius Vermicularis

A

Hand to mouth

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3
Q

What are the symptoms of Enterobius Vrermicularis

A

Causes perianal,perineal,vaginal irritation
Insomnia
Restlessness
Mild abdominal pain
Nausea
Vomiting

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4
Q

How is the diagnosis of Enterobius Vermicularis

A

Identification of the eggs from perianal region — NOCTURNAL observation
Cellophane tape

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5
Q

What is the host of Enterobius Vermicularis

A

Only human

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6
Q

How is the transmission of the Trichuris Trichiura

A

Eggs are passed in the feces
Fully embryonated eggs ingested

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7
Q

What are the features of the Trichuris Trichiura

A

Live in long intestine
Migrate in cecum
Larva live in colon
Eggs must undergo development in the soil before they become infective

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8
Q

How is the diagnosis of Trichuris Trichiura

A

Recovery or identification of eggs in feces

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9
Q

How is the shape of Trichuris Trichiura’s eggs

A

Barrel shaped

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10
Q

What does Trichuris Trichiura causes

A

Bloody, mucus diarrhea

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11
Q

What is the largest intestinal nematode

A

Ascaris Lumbricoides

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12
Q

How is the transmission of the Ascaris Lumbricoides

A

Eggs are passed in the feces
Ingestion of warm eggs

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13
Q

What are the features of the Ascaris Lumbricoides

A

Live in intestine
Blockage of intestines— malnutrition
Pneumonia

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14
Q

How is the diagnosis of Ascaris Lumbricoides

A

Identification of eggs in fecal samples

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15
Q

Which nematode has Flariform larva

A

Necator and Ancylostoma

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16
Q

What are the symptoms of Necator and Ancylostoma

A

Causes iron deficiency anemia
Coomonly asymptomatic
Abdominal pain
Anorexia
Nausea
Sore throat
Bloody sputum

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17
Q

Diagnosis of Necator and Ancylostoma

A

Recovery, identification of eggs in feces

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18
Q

What is the host of Stronglyloids Stercoralis

A

D: dogs

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19
Q

What does Stronglyloides Stercoralis causes

A

Skin: allergic reaction
Lungs: pneumonia
Intestinal: abdominal pain, diarrhea, vomiting, weight loss , anemia

20
Q

How is the diagnosis of the Stronglyloides Stercoralis

A

Recovery and identification of larvae in the feces,eggs in duodenal drainage

21
Q

What are hosts of Trichinella Spiralis

A

Main resovior: Pigs
Alternate host: Man

22
Q

How is the transmission of the Trichinella Spiralis

A

Ingestion of undercooked meat containing encysted larvae

23
Q

What are the symptoms of Trichinella Spiralis

A

Malaise
Diarrhae
Periorbital edema
Muscle weakness
Myocarditis
Encephalitis

24
Q

How is the diagnosis of Trichinella Spiralis

A

History
Muscle biopsy
Stool examination of adult form/ larvae
PCR
ELISA

25
Q

What are the hosts of Dracunvulus Medinenensis

A

D: Human
I: Cyclops

26
Q

How is the transmission of the Dracunculus Medinensis

A

Drinking unfiltered water containing copepods

27
Q

What are the symptoms of Dracunculus Medinensis

A

Pruritus
Urticarial rash
Blister formation in skin
Cellulitis

28
Q

How is the diagnosis of the Dracunculus Medinensis

A

Detection of adult worm and larval form in ulcer
ELISA
IPA
X-RAY

29
Q

What are the 2 agents of the Lymphotic Filariasis

A

Wucheria boncofti
Brugia Malayi

30
Q

Where does Lymphotic Fibrosis agents live in?

A

Adult forms only live in human lymph system

31
Q

How is the microfilariae of the Lymphotic Filsriasis agents

A

Sheathed

32
Q

How is the transmission of the Lymphatic Filariosis

A

Person to person

33
Q

What are the vectors of Wucheria

A

Culex
Aedes
Anopheles mosquito

34
Q

What are the vectors of the Brugia Malayi

A

Monsonia
Anopheles
Aedes mosquito

35
Q

What does Wucheria and Bruglia causes

A

Lymphedema
Elephantiasis
Hydrocele
Swelling

36
Q

How is the diagnosis of the Wucheria

A

Microfilaria in blood, history, symptoms

37
Q

How is the diagnosis of the Brugia Malayi

A

Microfilaria in stained blood smears

38
Q

What are the hosts of the Loa Loa

A

Only definitive: humans

39
Q

How is the transmission of the Loa Loa

A

Day-bitting flies (chrysops)

40
Q

Where does the adult forms of Loa Loa can migrate through?

A

Subcutaneous tissue
Muscle
In front of the eyeball
Subconjunctival migration

41
Q

How is the diagnosis of the Loa Loa

A

Demonstration of adult worm from skin and conjunctiva

42
Q

How is the Microfilaria of the Onchoecrca Valvulus

A

Not sheathed

43
Q

Where does Onchoncerca Valvulus found

A

Skin
Not in blood stream

44
Q

What is the vector of the Onchocerca Valvulus

A

Simulium flies

45
Q

Where id the infection of the Onchocerca Valvulus

A

Dermis and subcutaneous tissue

46
Q

Which nematode has a Fibrotic nodule

A

Onchocerca Valvulus

47
Q

How is the diagnosis of the Onchocerca Valvulus

A

Microfilariae are found in skin scrapings from around nodules

Microbiology (22 decks)

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