Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

parasitology > round worms > Flashcards

round worms Flashcards

1
Q

what is unique about the nematode (roundworm) body

A

epidermis covered by a cuticle

complete digestive tract (separate mouth + anus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how many juvenile (larval) stages are there and what occurs at the end of each stage?

A

four
molting occurs, growth occurs before and after molting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

in parasitic nematodes what is the infective stage to the definitive host?

A

L3
L3–>L4 once in definitive host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

GI nematodes that typically acquired by ingestion of infective eggs or larvae

A

monoxenous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

GI nematodes ingestion of infected intermeidate (or paraentenic) hosts

A

heteroxenous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

nematodes that undergoe heptao-tracheal migration

A

ascarids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

nematode that infects SI of swine and humans

A

ascaris suum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

nematode that infects the SI of horses

A

parascaris equorum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

disease that is primarily in young animals can cause respiratory signs in young pigs and foals

A

ascarosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

prevention by deworming and washing sows/mares prior to birthing, keeping young animals away from contaminated pastures/stalls and prophylactic pyrantel treatment

A

Ascarids: A. suum & P. equorum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

ascaridids prepotent infections

A

lung and tissue for baermann test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what nematode is resistant to ivermectin an moxidectin

A

P. equorum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

SI of mammals; monoxenous

A

toxocara spp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

toxocara in domestic and wild canids

A

T. canis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

toxocarain domestic and wild felids

A

T. cati

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

disease can be severe in puppies, usually subclinical or mild in kittens; symptomatic infections can occur in adult cats but rare in adult dogs

A

toxocariasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

T/F: Toxocara canis and Toxocara cati are zoontic; children are especially at risk

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

SI of chickens, turkeys, ducks, geese, and diverse wild birds, monoxenous; fecal-oral transmission

A

ascaridia galli
common round worm of domestic poultry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

treatment for ascaridia galli

A

fenbendazole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

monoxenous cecal worm of chickens, turkeys, other galliform birds

A

heterakis gallinarum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what serves as an intermediate host and vector for the turkey pathogen histomonas meleagridis

A

heterakis gallinarum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

parasite of the posterior gut of arthropods and vertebrates, highly host-specific, monoxenous

A

oxyurids- pinworms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

pinworm that descends the small colon and also large colon of equids

A

oxyuris equi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

egg masses are glued to perianal skin; causes perianal itching

A

Oxyuris equine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

The most common roundworm of domestic poultry

A

Acardidia galli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Trichinelloids (Trichuris)

A

whipworms
monoxenous, host-specific, cecum and colon of mammals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Trichuris larvae are in ____, adults are in _____

A

SI mucosa
cecum & colon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

whipworm found in canids world wide

A

T. vulpis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

whipworm found in swine worldwide common in US swine

A

T. suis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

with heavy infections what can cause rectal prolapse in dogs

A

T. vulpis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

heteroxenous

A

infected individual is both definitive and intermediate host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

most human cases in US come fro eating raw or undercooked pork or bear

A

Trichinellosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

prevent by cooking meat to safe temperatures, careful control of pig farming, preventing scavenging by pets, don’t feed pets raw meat

A

Trichinelloids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

treatment options for trichinella

A

mebendazole or albendazole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

what are the 4 major groups of strongylida

A
  1. GI “hairworms” and trichostrongyloid lungworms
  2. large bowel stongyles and nodular worms
  3. hookworms
  4. metastrongyloid lung, vascular and neural worms
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

what groups of strongylida are monoxenous

A

groups 1-3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

what group out of the strongylida is heteroxenous

A

group 4

38
Q

most infect the abomasum or stomach

A

trichostrongyloids

39
Q

infective larval stage of trichostrongyloids

A

L3

40
Q

trichostrongyloid species that feed on blood

A

Haemonchus spp.

41
Q

trichostrongyloid species that infect respiratory passages

A

Dictylocaulus

42
Q

where is arrested development occur in trichosterongyloids

A

in the host L3 or L4

43
Q

latent, inhibited or hypobiotic larvae

A

arrested larvae

44
Q

importance of arrested larval development

A
  • avoid conditions not optimal for growth/development/survival
  • resumption of development of a large number at one time -can cause significant disease in host
  • arrested larvae may be less susceptible to anthelmintics
45
Q

most important helminth parasite of sheep and goats in USA

A

Haemonchus contortus

46
Q

cooperia spp that infects SI of cattle

A

Cooperia punctata

47
Q

infects bronchial tree of cattle and other ruminants

A

Dictyocaulus viviparus

48
Q

diagnosis of trichostrongyloid lungworms

A

ID larvae in feces (Baermann apparatus)

49
Q

diagnosis of trichostrongyloid GI worms

A

ID eggs in fecal sample & fecal egg count

50
Q

most strongyloid worms infect the ?

A

large intestine
cause blood loss & damage to mucosa

51
Q

Strongylus vulgaris

A

large strongyles of equine colon & cecum

52
Q

Triodontrophorus spp

A

adults eat mucosal plugs and blood; larvae are non-migratory

53
Q

small strongyles of equine cecum and colon

A

Cyathostomins

54
Q

Adult Strongylus vulgaris

A

strongyloid of equine cecum and colon

55
Q

Mass emergence of hypobiotic cyathostomin larvae causing acute onset of profuse diarrhea, sudden weight loss, pyrexia, colic, subcutaneous edema, etc. Can be fatal, especially in young animals.

A

larval cyathostominosis

56
Q

swine kidney worm

A

stephanurus dentatus

57
Q

life cycle of stephanurus dentatus

A

adult worms in renal and peripheral tissue –> eggs in urine
-swine ingested L3s or infected paratenic host (worms); percutaneous infection of L3s
-larval migration in liver and stay there for long time (primarily site infection), then when ready to go an develop into adults in the kidney and get excreted

58
Q

where do syngamid worms infect

A

upper respiratory tract of birds and mammals

59
Q

syngamid worms also referred to as

A

gapeworms

60
Q

worm found in domestic and wild galiform birds

A

syngamus trachea

61
Q

life cycle of syngamus trachea

A

birds ingest L3s infective eggs or infective paratenic host –> larvae migrate SI to liver to the lungs –> obstruct airway adults

62
Q

where are hookworms mainly found

A

parasite of SI of mammals

63
Q

paratenic host of syngamus trachea

A

earthworms. terrestrial mollusks, larval flies

64
Q

ancylostomatoids primarily impact what species?

A

mainly dogs
cats
ruminants

65
Q

how does ancylstomatoids infect host

A

L3s typically ingested or can penetrate skin
-go straight to thee lungs and climb up and get swallowed and stay in SI
-milk and SI stay and develop into adults

66
Q

dog ancylstomatoids spp (hookworm) that infect dogs

A

ancylostoma caninum
A. braziliense

67
Q

cat ancylstomatoids spp that infect cats

A

ancylostoma tubaeforme
A. braziliense

68
Q

what is more pathogenic the dog ancylostoma spp or the feline

A

dog

69
Q

if a dog is older than 3 months what larvae arrest in the skeletal muscle and SI wall? what happens if they are female? and when do they become activated?

A

A. caninum
-during pregnancy they migrate to mammary glands –> milk –> pups
-and adult hookworms can get lost from the SI are arrestely developed and pass once dewormed

70
Q

hookworm of domestic ruminants, cattle

A

Bunostomum phlebotomum

71
Q

ancylostomatoids

A

hookworms

72
Q

hook worm species that percutaneous route of infection predominates

A

bunostomum spp

73
Q

what parasite infect the resp tract, vascular, and nervous system of mammals

A

metastrongyloids

74
Q

metastrongyloid lungworms of the sheep and goats

A

protostrongylus rufescens
muellerius capillaris

75
Q

most common lungworm of cats

A

aelurostrongylus abstrusus

76
Q

metastrongyloid lungworm of dog
what is reservoir host

A

crenosoma vulpis
red fox (vulpes vulpes) reservoir host

77
Q

filaroides spp what stage odf lifecycle is infective?

A

direct life cycle
L1s are infective

78
Q

two filaroides spp that infect airway of dogs

A

F. osleri
F. hirthi

79
Q

what species of hookworm zoonotic and causes cutaneous larva migrans

A

A. braziliense
A. caninum

80
Q

ancylostoma caninum paratenic host?

A

rats

81
Q

syngamus trachea paratenic host

A

earthworms, terrestrial mollusks, larval flies

82
Q

threadworm strongyloides species that infects dogs, cats, humans and other primates

A

S. sterorlais

83
Q

treatment for mammals and birds of strongyloides spp

A

mammals: ivermectin
birds: tetramisole

84
Q

physaloptera spp that infect the stomach of mammals, birds, reptiles and amphibians what is the intermediate host and the paratenic host

A

intermediate host: various insects
paratenic host: insect eating vertebrates

85
Q

Dx spirurids spp

A

fecal sedimentation

86
Q

thelazia spp that infect eye worms of mammals and birds, infect conjunctiva sac, lacrimal gland and ducts, who is the intermediate host

A

flies that feed on ocular secretions

87
Q

habronema muscae intermediate host

A

housefly and stable fly

88
Q

habronemiasis of equid

A

habronema muscae

89
Q

spirocerca lupi intermediate and paratenic host

A

intermediate host: coprophagous beetles
paratenic host: insect-eating vertebrates

90
Q

spirocerca lupi complications

A

aortic aneurysm or rupture with fatal hemorrhaging, esophageal sarcoma –> hypertrophic osteopathy of long bones

91
Q

equine neck threadworm

A

O. cervicalis

parasitology (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions