Brainscape's Knowledge GenomeTM

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


See full index

Blood > External Parasites > Flashcards

External Parasites Flashcards

1
Q

Define

Symbiosis

A

Two organisms living together

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

Define

Mutualism

A

Two organisms living together where both benefit

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

Define

Commensalism

A

Two organisms living together
* one benefits
* other neither benefits or is harmed

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

Parasitism

A

Organism lives on or in host and may be pathogenic
* ectoparasite = external
* endoparasite = internal

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

Define

Obligate Parasite

A

Parasite unable to lead a free-living existence

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

Facultative Parasite

A

Organisms that are non-parasitic in nature by can become parasitic in certain hosts

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

Reservoir Host

A

Vertebrae host that has the parasite and is source of infection

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

Definitive Host

A

Harbors the adult, sexual, and mature stages of parasite

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

Arthropods

A
  • Exoskeleton with segments
  • True body cavity
  • Circulatory, Excretory, Nervous, Reproductive Systems
  • Jointed legs
  • Egg reproduction (2 sexes)
  • Insects vs Arachnids
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Insects

Body Anatomy

A
  • 6 Legs
  • Head / Thorax / Abdomen
  • May or may not have wings
  • Antennae
  • Mouthparts for chewing/sponging/sucking
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Insects

Examples

A
  • Fleas
  • Lice
  • Flies
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Arachnids

A
  • 8 legs
  • Cephalothorax / Abdomen
  • No antennae
  • Mouthpart for cutting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Arachnid

Examples

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

Flea Life Cycle

A
  • Eggs on host fall off and into environment
  • Eggs hatch into larvae - feed on organic debris (poop)
  • Larvae spin cocoons
  • Adults emerge based on vibration, pressure, heat, noise, CO2
  • Adults always parasitic - can live for extended periods of time in environment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Dog and Cat Flea

Technical Name & Info

A

Ctenocephalides (felis and canis)
* anemia with heavy infestation
* saliva is antigenic - hypersensitivity and dermatitis
* observe near base of tail, ventral abdomen, and chin

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

Fleas as Vectors

A
  • Dipylidium caninum
  • Plague
  • Rickettsia (typhus)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Lice

Technical Name

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

Lice Severity

A

More severe in:
* young/old/poorly nourished
* overcrowded conditions
* colder months

19
Q

Mallophaga

A
  • Mouthpart = biting/chewing
  • Moves rapidly
  • Smaller
  • Broad, rounded head
20
Q

Anoplura

A
  • Mouthpart = sucking
  • Moves slowly
  • Larger size
  • Long, narrow head
21
Q
A

Mallophaga Lice

22
Q
A

Anoplura Lice

23
Q

Mites and Ticks

Technical Name

A

Acarina

24
Q

Hard Ticks

Technical Name

A

Ixodidae

25
Q

Brown Dog Tick

A
  • Rhipicephalus sanguineus
  • Transmits E. canis and Babesia
26
Q
A

Rhipicephalus sanguineus
(brown dog tick)

27
Q

American Dog Tick

A
  • Dermacentor variabilis
  • Transmits Rocky Mountain Spotted Fever - treat w/ antibiotics
  • Causes tick paralysis (toxic female saliva) - treat w/ removal
28
Q
A

Dermacentor variabilis
(american dog tick)

29
Q

Blacklegged or Deer Tick

A
  • Ixodes scapularis
  • Transmits Lyme disease
30
Q
A

Ixodes scapularis
(blacklegged or deer tick)

31
Q

Lone Star Tick

A
  • Amblyomma americanum
  • Causes Masters Disease - rash illness (presents like lyme in humans)
  • Can also cause Rocky Mountain Spotted Fever
32
Q
A

Amblyomma americanum
(lone star tick)

33
Q

Sarcoptes Mites

A
  • Burrow/ tunnel into superficial layer of skin
  • Localized inflammation and hair loss
  • Prefers areas with little hair - ears, elbows, hocks, ventrum
  • Spreads rapidly - direct contact
  • Extreme pruritus
  • Diagnose with superficial skin scrape
34
Q
A

Sarcoptes Mite

35
Q

Demodex Mites

A
  • Burrowing mite into hair follicles and sebaceous glands
  • Immunodeficiency needed for infestation
  • Causes hair loss, thickening skin, and pustules
  • Not pruritic unless secondary infection
  • Not contagious (though transferred to babies from mom in dogs)
  • Deep skin scrap needed to diagnose
36
Q

Demodex Infestations

Types

A

Localized
* red, scaly lesions on face or forelegs
* goes away on own once immunocompetent

Generalized
* patchy fur and alopecia over entire body
* treatment recommended

Pododermatitis
* confined only to paws - last stronghold
* often generalized during recovery
* may require biopsy to diagnose

37
Q
A

Demodex Mite

38
Q

Otodectes Mites

A
  • Ear mites
  • Live in external ear canal of cats and dogs
39
Q
A

Otodectes Mite

40
Q

Cheyletiella Mites

A
  • Walking dandruff
  • Causes dry, scaly dermatitis with dandruff
  • With or without pruritus
  • Find on dorsum above tail and neck
  • Highly contagious
41
Q
A

Cheyletiella Mite

42
Q

Rocky Mountain Spotted Fever

Vectors and Symptoms

A

Transmitted by
* Dermacentor
* Amblyomma americanum

Symptoms
* fever
* chills
* headaches
* muscle pains
* rash

43
Q

Tick Paralysis

Vector and Symptoms

A

Transmitted by
* Dermacentor

Symptoms
* paralysis progresses back to front
* anorexia
* lethargy
* muscle weakness
* ataxia
* nystagmus

44
Q

Lyme Disease

Vector and Symptoms

A

Vector
* Ixodes scapularis

Symptoms
* fever
* shifting leg lameness
* swelling in joints
* lethargy
* anorexia

Blood (11 decks)

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