3.14/15 parasites Flashcards

(49 cards)

0
Q

Host where parasite is in larval stage or has asexual reproductive phase

A

Intermediate or secondary host

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1
Q

Host where parasite is adult and/or has sexual reproductive phase

A

Definitive or final host

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2
Q

Life cycle in one host

A

Direct life cycle

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3
Q

Life cycle in multiple hosts

A

Indirect life cycle

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4
Q

Which parasite shifts th1 to th2 response

A

Flagellate

- Leishmania

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5
Q

What parasite goes into macrophages

A

Flagellate

- Leishmania

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6
Q

What parasite conceals it’s antigenic site with our proteins

A

Trematode

- Schistosome

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7
Q

What parasite has high amount of antigenic variation

A

Flagellate

- trypanosome cruzei

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8
Q

Infective: cyst
Diagnostic: trophozoite

A

Amoeba
Flagellate (Giardia only)
Ciliate

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9
Q

Types of Protozoa

A

Amoeba
Flagellates
Ciliates
Sporozoans/ apocomolexans

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10
Q

Fecal contamination

A

Ciliates

- balantidium coli

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11
Q

Contact with pigs causes transmission

A

Ciliates

- balantidium coli

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12
Q

Causes encephalitis in immunocompromised

A

Sporozoan / apocomplexan

- toxoplasma gondii

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13
Q

Can have an amastigote as a diagnostic

A

Flagellates

  • trypanosoma brucei & cruzei
  • leishmania
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14
Q

Cat is a reservoir

A

Sporozoans / apocomplexans

- toxoplasma gondii

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15
Q

Life threatening diarrhea in immuno compromised

A

Sporozoans / apocomplexans

- cryptosporidium

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16
Q

Uses Hb for nutrition

A

Sporozoans / apocomplexans

- plasmodium

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17
Q

Female anopheles mosquito as vector

A

Sporozoans / apocomplexans

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18
Q

Can have schizont and merizoites for diagnostic

A

Sporozoans / apocomplexans

- plasmodium

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19
Q

What uses pseudopodia for movement

20
Q

What uses flagella for movement

21
Q

What uses cilia for movement

22
Q

What has an apical complex that penetrates into the host cell

A

Sporozoans / Apocomplexans

23
Q

Transmitted via sandfly

A

Flagellates

- leishmania

24
Types of helminths
Nematodes Trematoda Cestodes
25
Roundworms are
Nematodes
26
Filarial worms are
Nematode a
27
Flukes are
Trematoda
28
Tapeworms are
Cestoda
29
Round in cross section
Nematodes
30
Dorsoventrally flattened
Trematodes
31
Flat in cross section
Cestodes
32
Absorbs vitamin B12 so causes pernicious anemia
Cestode | - diphyllobothrium latum
33
Have complete digestive tracts
Nematodes
34
Have entire anatomy for reproduction
Cestodes
35
Infective: metacercariae
Trematoda | - hermaphroditic
36
Infective: cercariae
Trematode | - Schistosome
37
Causes calabar swellings
Nematode | - loa loa (a Filarial worm)
38
If in lungs, causes pneumonia like symptoms and high eosinophilia
Nematode | - roundworm
39
Can cause elephantiasis
Nematode | - Filarial worm --> wuchereria bancrofti and brugia malayi
40
Contains proglottids
Cestodes
41
Hermaphroditic
Trematode - hermaphroditic Cestode
42
Have scolex for attachment
Cestodes
43
Have acetabulum for attachment
Trematode
44
Have two suckers
Trematoda
45
No internal digestive tracts
Cestodes
46
Infective: Filarial larvae
Nematode | - Filarial worm
47
Snail vectors
Trematodes - hermaphroditic - schistosome
48
Infects intestine, liver, lungs
Trematode | - hermaphroditic