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Flashcards in MidTerm Deck (74):
1

Aberrant parasite

Erratic parasite

2

Acaricides

Drugs that kill acarides (mites)

3

Annelids

Segmented parasites

4

Anthelmintics

Drugs that kill helminths

5

Antiprotozoals

Drugs that kill protozoans

6

Definitive host

Host that houses parasite in parasites mature, adult, sexual stage

7

Dioecious

Separate sexes

8

Endoparasitism

Parasite within the body

9

Euryxenous parasite

Parasite that affects multiple species

10

Facultative parasite

Parasite that can live without a host

11

Hirudineans

Leeches

12

Hydatid Cyst

Cyst containing eggs in their own spot/separated by others

13

Infection

Parasite within body causes this

14

Infestation

parasite outside body causes this

15

Intermediate host

Host that holds parasite during larval stage

16

Obligatory parasite

parasite needs a host

17

Operculated ovum

Shaped like stewies head; oval, has operculums

18

Prepatent period

Time where host is infected until time able to diagnose

19

Alimentary canal

GI tract

20

Proboscis

Spiny attachment organs of acanthocephalans

21

Rostellum

On scolex of cestodes

22

Occult blood

Blood in feces

23

Schistosome

Blood flukes

24

Scolex

Head of cestode

25

Hirudo medicinalis

Leech used for medicinal purposes

26

Name the five types of symbiotic relationships and give an example for each:

-Mutualism: Cow and bacteria in rumen
-Parasitism: Dog having heartworm
-Comensalism: Shark and cleaner fish
-Predator/Prey: Zebra being killed by lion
-Phoerisis: Cow and fly (carrying pink eye from cow to cow)

27

Explain difference between infection nd infestation

Infection: When host has an endoparasite
Infestation: When host has an ectoparasite

28

Explain difference between facultative and obligatory parasites

Facultative: Free living parasite, does not need a host to survive
Obligatory: Parasite needs host to survive

29

Explain difference between homoxenous and euryxenous parasites

Homoxenous: Parasite that can only affect one species
Euryxenous: Parasite that can effect multiple species

30

List the 7 Linnaean classification in order:

Kingdom, phylum, class, order, family, genus, species

31

In what kingdom do most parasites of domestic animals belong?

Animalia

32

Flatworms belong in what phylum?

Platyhelminthes

33

Roundworms belong in what phylum?

Nematoda

34

Thorn0headed worms belong in what phylum?

Acanthocephala

35

Spiders and mites belong in what phylum?

Arthropoda

36

Kingdom, phylum, class for tapeworms

Animalia, Platyhelminthes, cestoda

37

Since tapeworm infections are treated similarly, why is it important to identify which type of tapeworm infection an aimal has?

So we know how the animal got the parasite and how to stop it from happening again

38

Trichuris vulpis

Canine whipworm

39

Intermediate host for Dipylidium caninum

Flea

40

Life cycle of D. immitis

L1, (molts), L2, (molts), ingested by host, L3, parasite produces eggs

41

The most powerful anticoagulant ____ known is secreted into the bite wound of ______ to keep the host bleeding as the animal feeds

Hirudin, leeches

42

What is the benefit of medicinalleeches?

For them to secrete hirudin, also to allow and aid the blood to circulate the body to new body parts

43

T/F
Veterinarians and techs are responsible for many aspects of human health and disease prevention

True

44

T/F
A parasite can cause parasitiasis in some animals with a low parasite burden or number

True

45

T/F
A parasite may cause parasitosis with a high parasite burden

True

46

T/F
All parasites can have obligatory stage in their development where they need a host and some life stages can be nonparaistic

False

47

T/F
With some parasites, only the female adult is paraisitic while free living males and femals are nonparasitic

True

48

T/F
Novice veterinary technician students always mistake air bubbles on a fecal flotation slide for a parasite egg

False

49

T/F
Some parasites can serve as intermediate hosts for other parasites as well as being parasites themselves

True

50

T/F
Most parasites of domestic animals belong in the kingdom protista

False

51

T/F
Monogenetic flukes are commonly seen in veterinary practice

False

52

T/F
Pseudotapeworms use microscopic aquatic crustaceans and the musculature of fish and reptiles as intermediate hosts for part of their life cycle

True

53

T/F
Annelids are the largest group of helminthes that parasitize domesticated animals

False

54

T/F
The spiny proboscis on Acanthocephalans is used as an organ of motion or movement

False; attachment

55

T/F
Most of the ectoparasites seen in the veterinary profession belong to the phylum insecta

False

56

T/F
Nematodes are the most numerous and diverse group of animals on Earth

True

57

T/F
Nematodes have a pseudocoelom

True

58

T/F
Whipworms produce fewer eggs than nematodes

True

59

T/F
Whipworms only release eggs every third day

True

60

T/F
In dog feces, you will commonly find the larvae, rather than ova, of Strongyloides species

True

61

T/F
Ideally, centrifugal flotation should be used to better float whipworm ova

True

62

T/F
Feline heartworm disease produces the same hallmark signs observed in canine heartworm disease

False

63

T/F
Acanthocheilonema reconditum is transmitted to the dog by ingestion of the cat flea, Ctenochalides felis

True

64

T/F
The suckers on Cestodes are associated with food intake

False

65

T/F
The life cycle of the pseudotape worm is more simplistic than that of the true tapeworm or Eucestode

False

66

T/F
Taenid eggs cannot be found on standard fecal flotation

False

67

T/F
Digenetic trematodes do not possess an anus

True

68

T/F
Fasciola hepatica is the most studied fluke affecting domestic livestock

True

69

T/F
The eggs of the lung fluke can be found on fecal sedimentation of feces or sputum

True

70

T/F
Only two species of acanthocephalans are important to veterinary medicine

True

71

T/F
Leeches have segmented bodies with no hard exoskeleton

True

72

T/F
Medicinal leeches can consume blood up to five times their own weight

True

73

T/F
Medicinal leeches are most often though of in conjunction with bloodletting throughout history

True

74

T/F
Land leeches are found on the surface of trees and grasses

True