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Clin Path > Protozoa and Rickettsia > Flashcards

Protozoa and Rickettsia Flashcards

1
Q

3 primary phyla of Protozoa

A

Sarcomastigophora, Apicomplexa, Ciliophora

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2
Q

Asexual reproduction

A

binary fission, schizogony, budding

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3
Q

sexual reproduction

A

syngamy, conjunction

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4
Q

stage of protozoal life cycle that is capable of feeding, movement, and reproduction

A

trophozoite

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5
Q

long whip-like structure

A

flagella

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6
Q

short flagella arranged in rows or tufts

A

cilia

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7
Q

temporary projections of and retractions of body wall

A

pseudopods

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8
Q

small snakelike waves that form cell membrane

A

ungulatory ridges

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9
Q

describe cyst stage

A

prevents desiccation, occurs when protozoa lacks nutrients, low O2, lack of water, low pH, accumulation of waste, overcrowding

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10
Q

move via pseudopodia, and have both trophozoite and cyst stage

A

amoebas

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11
Q

one or more flagella in trophozoite stage

A

flagellate

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12
Q

flagellated protozoa recovered from diarrhea in dogs and cats but can also be in normal feces (zoonotic)

A

Giardia

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13
Q

location of Giardia

A

small intestine

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14
Q

trophozoite of Giardia

A

rounded leaf shape, “eyes”, tail

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15
Q

cyst stage of Giardia

A

opalescent looking egg

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16
Q

parasite of humans and dogs, banana shaped with flagellum, 3-10x the size of RBC

A

Trypanosoma cruzi (Trypanosomes)

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17
Q

mucocutaneous leishmania forming skin sores

A

Leishmania braziliensis

18
Q

visceral form of leishmania that affects several internal organs

A

L. donovani and L. infantum

19
Q

long, slender organisms with single flagellum attached to dorsal surface that creates a “sail” (lil purple dude)

A

Trichomonads

20
Q

Trichomonads in reproductive tract of cattle (resides in prepuce of bulls and vagine, cervix, and uterus of cows)

A

Tritrichomonas foetus

21
Q

clinical signs of T. foetus

A

infertility, spontaneous abortions, and pyometra

22
Q

shape of T. foetus

A

pear shaped with 3 anterior flagella

23
Q

Trichomonads found crop (pouch like enlargement on birds)

A

Trichomonas gallinae

24
Q

clinical signs of T. gallinae

A

necrotic ulcerations of esophagus, crop, and proventriculus

25
Q

infects turkeys, chickens, pheasants, and other avian species

A

Histomonas meleagridis

26
Q

in turkeys, H. meleagridis causes infectious enterohepatitis aka…

A

black head

27
Q

primarily human parasite found in tropical regions with no clinical significance

A

Entamoeba histolytica

28
Q

parasite found in sm. intestines of dogs and cats (egg shaped with 1 or 2 “yolks”)

A

Cystoisospora coccidiap

29
Q

prepatent period of coccidia

A

7-14 days

30
Q

intestinal coccidian of cats, very harmful to pregnant women

A

Toxoplasma gondii

31
Q

coccidian of sm. intestines of wide variety of animals, zoonotic, picture with a bunch of them grouped together

A

Cryptosporidium

32
Q

another coccidian of sm. intestines

A

Sarcocystis

33
Q

intracellular parasite of RBCs in dogs aka piroplasm

A

Babesia canis

34
Q

what does piroplasm mean

A

pear shaped

35
Q

intracellular parasite of RBCs in cats, rapidly fatal, causes multiple organ failure

A

Cytauxzoon felis

36
Q

intracellular, malaria like parasite affecting dogs (presents as little dot on the edge of RBC)

A

Hepatozoon canis and H. americanum

37
Q

which is more severe? H. canis or H. americanum

A

H. americanum

38
Q

coccidian found in sm. intestines of horses

A

Eimeria leuckarti

39
Q

what cause malaria in mammals, birds, and reptiles

A

Plasmodium sp.

40
Q

ciliated protozoan in large intestine in swine

A

Balantidium coli

Clin Path (5 decks)

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