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Clinical Pathology > Parasitology I > Flashcards

Parasitology I Flashcards

1
Q

where do endoparasites live

A

internally

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2
Q

where do ectoparasites live

A

externally

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3
Q

what is symbiosis

A

two organisms living together

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4
Q

three types of symbiosis

A

commensalism
mutualism
parasitism

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5
Q

commensalism definition

A

one organism benefits, other is unaffected

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6
Q

mutualism definition

A

both organisms benefit

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7
Q

parasitism definition

A

one organism benefits, other is harmed

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8
Q

types of hosts

A

definitive
intermediate
paratenic/transport
reservoir

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9
Q

definitive host definition

A

a host that shelters that sexual adult stages of the parasite

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10
Q

intermediate host definition

A

a host that shelters the asexual (immature) or larval stages of the parasite

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11
Q

paratenic/transport host definition

A

a host in which the parasite survives without multiplying or maturing

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12
Q

reservoir host definition

A

a source (living/nonliving) that serves as a source of infection

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13
Q

what are the general requirements for parasite survival

A

an infective stage
availability of a definitive host
a mode of exit from the host

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14
Q

what is the prepatent period (PPP)

A

period between infection with a parasite and the demonstration of the parasite in the body

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15
Q

why is knowing the PPP for each parasite important

A

testing during this time will not detect diagnostic stage

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16
Q

in what ways can parasites have a negative impact on the host

A

injury to animal
malnutrition and anemia
loss of fiber, meat, milk, etc
pruritus/decreased QOL
zoonosis

17
Q

clinical signs of parasites depend on what

A

type of parasite
migration pattern through hosts
maturation/reproduction site of parasite in host

18
Q

what are the 5 nematodes discussed in class

A

ascaroidea
strongyloidea
trichuroidea
oxyuroidea
filaroidea

19
Q

ascaroidea common name

A

roundworms

20
Q

strongyloidea common name

A

hookworms

21
Q

trichuroidea common name

A

whipworm

22
Q

oxyuridea common name

A

pinworms

23
Q

filaroidea common name

A

heart worms

24
Q

why is fresh feces needed to diagnose hookworms

A

eggs larvate rapidly in external environment

25
Q

which nematode does not live within the GI tract

A

heart worms

26
Q

why is antibody testing the preferred method of diagnosing HW in cats

A

cats have low worm burdens

Clinical Pathology (17 decks)

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