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Animal Health & Disease 1 > Lecture 45 - Intro to Parasitology > Flashcards

Lecture 45 - Intro to Parasitology Flashcards

1
Q

describe protozoa

A

single-cell parasites
intra- and extra- cellular
self-replicate in host

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2
Q

T/F: replication is necessary for pathology caused by protozoa

A

TRUE

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3
Q

describe flukes (trematodes)

A
  • multicellular
  • individual adult organisms DO NOT self-replicate in host
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4
Q

describe tapeworms (cestodes)

A
  • multicellular
  • individual adult organisms DO NOT self-replicate in host
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5
Q

describe roundworms (nematodes)

A
  • large, multicellular parasites
  • individuals DO NOT self-replicate in the host
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6
Q

describe arthropods

A
  • multicellular parasites
  • vectors
  • individuals DO NOT self-replicate in the host
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7
Q

what high-level group is:

Haemonchus contortus

A

nematode

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8
Q

what high-level group is:

Macracanthorhynchus insignis

A

acanthocephalan

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9
Q

what high-level group is:

Amblyomma americanum

A

arthropod

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10
Q

what high-level group is:

Fasciola hepatica

A

trematode

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11
Q

what high-level group is:

Dipylidium caninum

A

cestode

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12
Q

what high-level group is:

Trypanosoma cruzi

A

protozoa

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13
Q

what is the common name/group for:

Paragonimus kellicotti

A

lung fluke

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14
Q

what is the common name/group for:

Ostertagia ostertagi

A

trichostrongyle

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15
Q

what is the common name/group for:

toxocara cati

A

ascarid

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16
Q

what is the common name/group for:

bovicola equi

A

chewing louse

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17
Q

what is the common name/group for:

anoplocephala

A

tapeworm

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18
Q

what is the common name/group for:

tritrichomonas foetus

A

mucoflagellate

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19
Q

oxyuris equi life cycle

direct or indirect?
type of host?
parasite stages?
host specificity?
zoonotic?

A

direct
definitive
adult, ovum
high host specificity
not zoonotic

20
Q

physaloptera life cycle

direct or indirect?
type of host?
parasite stages?
host specificity?
zoonotic?

A

indirect
definitive, intermediate, paratenic, sylvatic, and reservoir hosts
adult, ova, ineffective and arrested larvae
low host specificity
not zoonotic

21
Q

A parasite that is transmitted to the next definitive host
without development in an intermediate host.

A

direct life cycle

22
Q

The host in which the sexually mature parasite resides.

A

definitive host

23
Q

A form of asexual reproduction that many protozoa utilize.

A

binary fission

24
Q

Ostertagia ostertagi

A

pasture-borne nematode

25
Q

An optional host, in which a parasite does not develop but
utilizes as a transport host.

A

paratenic host

26
Q

An arthropod life cycle in which the nymphal stages look like
the adult arthropod.

A

simple metamorphosis

27
Q

Ctenocephalides felis

A

holometabolous

28
Q

what are the 3 forms of trauma pathogenesis

A
  1. direct
  2. indirect
  3. organ occlusion
29
Q

what determines disease state

A

parasite number and pathogenicity

30
Q

what are the 3 classifications of pathogenicity in a host

A
  1. no effect
  2. subclinical
  3. clinical
31
Q

infection

A

presence of an agent that has potential to cause disease

32
Q

disease

A

occurence of dysfunction/pathology

33
Q

infectious

A

infected host capable of transmitting infection to another host

34
Q

infection, disease, infectious?

The dog showed no adverse symptoms to the 2 female Dirofilaria immitis in its
pulmonary arteries.

A

infection

35
Q

infection, disease, infectious?

A lamb with 1,000 juvenile Haemonchus contortus in its abomasum suffers from severe
anemia.

A

infection and disease

36
Q

infection, disease, or infectious?

A cat, suffering small bowel diarrhea, passes Giardia cati cysts in its stool

A

infection, disease, and infectious

37
Q

infection, disease, or infectious?

After using the bathroom, she was horrified to see that she had passed several active
segments of the beef tapeworm, Taenia saginata.

A

infection +/- infectious

38
Q

infection, disease, or infectious?

Eimeria sp. oocysts are found on a dog’s annual wellness visit.

A

none

39
Q

prepatent period

A

developmental/maturation time needed between time of infection to offspring production

40
Q

patent

A

an infection in which sexually mature parasites are generating offspring

41
Q

what is the parasitological concept associated with:

Within the definitive host, the period of parasite development
from host infection to production of parasite offspring.

A

prepatent period

42
Q

what is the parasitological concept associated with:

oxyuris equi

A

high host specificity

43
Q

what is the parasitological concept associated with:

a parasite that can infect a human

A

zoonotic

44
Q

what is the parasitological concept associated with:

degree of host-parasite compatibility

A

host specificity

45
Q

what is the parasitological concept associated with:

An infection in which the parasite is producing offspring.

A

patent

Animal Health & Disease 1 (52 decks)

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