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Flashcards in PB Ch6 Rabbit Deck (105):
1

How can members of the order Lagomorpha be differentiated from the order Rodentia?

An additional pair of incisor teeth is located directly behind the large incisors on the upper jaw.

2

2. Give the genus and species name of the domestic rabbit.

Oryctolagus cuniculus

3

3. Which of the following most accurately describes aspects of the rabbit which make it a good research model?
a. Large ears
b. Readily accessible blood vessels
c. Ideal candidate for antibody production and blood collection
d. Blood flow to the ears is the primary means of temperature control
e.  All of the above

e

4

4. The majority of rabbits used for research are of the ___________ breed.

New Zealand White

5

5. Give the term of the practice used by domestic rabbits in recycling protein and B complex vitamins.  

cecotrophy

6

6. The mean lifespan of rabbit erythrocytes is _______ days.

50

7

7. The rabbit counterpart for the neutrophil is a __________________.

heterophil

8

8. Basophils may represent up to _______% of circulating leukocytes.

30%

9

9. __________________ are usually the predominant leukocyte in the peripheral blood of domestic rabbits.

lymphocytes

10

10. Rabbits are a (fore, mid or hind) gut fermenter.

hind

11

11. Name the spherical, thick-walled enlargement which is found at the ileocecal junction of rabbits. 

sacculus rotundus

12

12. The ______________ ____________ is a round patch of lymphoid tissue adjacent to the cecum.

cecal tonsil

13

13. The _____________ is found at the tip of the cecum.

appendix

14

14. GALT stands for _______-__________________ _________________ _______________

gut-associated lymphoid tissue

15

15. Brunner’s glands are found in what portion of the small intestine?

duodenum

16

16. The pH of rabbit urine is (acidic, alkaline) and contains ____________________ and ___________________ (what type) crystals.

alkaline;

primarily calcium carbonate monohydrate and ammonium magnesium phosphate (triple phosphate) crystals after rabbits begin eating solid food

17

17. Dark reddish, orange urine is found in the rabbit’s pan liner?  What do you suspect is the cause?
a. Normal urine only
b. Elevated levels of urobilin
c.  Hematuria
d. Could be associated with any of the above

d

18

18. The rabbit placentation is
a. endotheliochorial
b. hemochorial
c. hemoendothelial
d. epitheliochorial

Rabbit placentation is hemoendothelial.

19

19. The _______________________ virus is a benign disease of cottontail rabbits and is used as a model for papillomatosis and virus-induced malignancy.  It produces papillomas with a high incidence of progression to squamous cell carcinoma.
a. Adenomavirus
b. Adenovirus
c. Polyomavirus
d. Papillomavirus

d. Papillomavirus

20

20. The natural host of rabbit (Shope) papillomatosis is:
a. Oryctolagus
b. Sylvilagus

b. Sylvilagus

21

21. The most common oral location for pedunculated oral papillomatosis lesions in domestic rabbits is:
a. dorsal tongue
b. maxillary gingiva
c. mandibular gingiva
d. ventral tongue

d

22

22. Which of the following virus types has been isolated from primary rabbit kidney cultures?
a. Pox virus
b. Adenovirus
c. Parvovirus
d. Polyoma virus

d

23

23. Give the genus and species name of the “brush rabbit”.

Sylvilagus bachmani

24

24. What infectious agents of rabbits has been used as a means of biological control for a specific population of rabbits?

Myxomatosis virus

Rabbit calicivirus - Rabbit Hemorrhagic Disease

25

25. Vectors for transmission of myxomatosis include _____________ and ______________.

fleas and mosquitos

26

26. Shope fibroma virus was first isolated from a cottontail rabbit (provide genus and species name) in the US in 1932..

Sylvilagus floridanus

27

27. The primary site for viral replication of rabbit pox in the naturally occurring disease is the ____________________________.

respiratory tract

28

28. True or False????  Herpes sylvilagus replicates well in kidney cells prepared from the domestic rabbit, however viral infection of the NZW rabbit has not been successful.

True

29

29. Rabbit hemorrhagic disease (RHD) is caused by a:
a. calicivirus
b. picornavirus
c. herpesvirus
d. poxvirus

calicivirus 

30

30. Which of the following diseases have been used as a form of biological control for wild rabbit populations?
a. Rabbit pox
b. Myxomatosis
c. Rabbit hemorrhagic disease
d. Leporid Herpesvirus 1 infection
e. both a and b
f. both b and c
g. all of the above

f

31

31. Coronavirus infection may be associated with which of the following clinical syndromes:
a. enteritis
b. pleural effusion
c. cardiomyopathy
d. all of the above

d

32

32. Rotaviral infection is usually confined to what animal age groups?

sucklings and weanlings

33

33. Snuffles, atrophic rhinitis, suppurative otitis media, and genital tract infection are characteristic clinical signs of infection with _________________.

Pasteurella multocida

34

34. True or False:  Localized suppurative bronchopneumonia is naturally produced in rabbits inoculated intranasally with Bordetella bronchiseptica.

False - experimentally-induce in cortisone treated rabbits

35

35. CAR Bacillus infection can be demonstrated best by which of the following techniques?
a. silver stain
b. H & E stains
c. electron microscopy
d. both a & b
e. both a & c

e

36

36. List 4 of the eight agents now recognized to play a role in the “enteritis complex” of rabbits.

rotaviruses, coronaviruses, Clostridium, E. coli, Lawsonia, Salmonella, Vibrio, coccidian

37

37. The most common clostridial pathogen associated with the enteritis complex in juvenile rabbits is:
a. C. difficile
b. C. spiroforme
c. C. perfringens
d. E. coli

b

38

38. Which of the following microscopic staining methods yields a better demonstration of the characteristic bundles of filamentous bacilli associated with Tyzzer’s disease?
a. Warthin-Starry silver method
b. Giemsa
c. H & E
d. both a and b
e. both b and c

d

39

39. Which of the following characteristics is NOT consistent with enteropathogenic (EPEC) strains of E. coli?
a. cause intestinal disease
b. produce enterotoxins
c. not enteroinvasive
d. none of the above

b. produce enterotoxins

40

40. True or False:  Dutch Belted rabbits naturally infected with enterohemorrhagic strains of E. coli develop renal disease similar to the hemolytic-uremic syndrome seen in humans.

True

41

41. What methods can be used to identify bacteria in the apical cytoplasm of the crypt-villus column?
a. Silver stains
b. Periodic-acid Schiff stain
c. Electron microscopy
d. All of the above

d

42

42. Which of the following diseases is associated with the following clinical signs:  succussion splash, teeth grinding, cecal impaction, cecal dysbiosis and accumulation of large quantities of gelatinous mucus in the colon?
a. Salmonella
b. Vibrio
c. Mucoid enteropathy
d. Listeriosis

c

43

43. Abortion and sudden death , particularly in does in advanced pregnancy, are characteristic signs of ______________________.

Listeriosis

44

44. “Sore hocks”, or ulcerative pododermatitis, is associated with __________________ infections. 

staphylococcal

45

45. Rabbit syphyllis or “vent disease” is caused by _______. 

How is diagnosis confirmed?

Treponema paraluiscuniculi

Dark-field examination of wet mounts is recommended

Silver staining, Plasma Reagin Antibody Test, & Fluorescent Treponemal Antigen Test are also available

46

46. True or False:  Helicobacter does not infect domestic rabbits.

False

47

47. Yersinia pseudotuberculosis is transmitted via:
a. ingestion of contaminated food or water
b. contaminated bedding
c. vector  

a

48

48. True or False:  Isospora is the most common genus of coccidia seen in rabbits.

False; Eimeria is more common

49

49. What are the two most common pathogenic species of intestinal coccidia in rabbits?

E. intestinalis, E. flavescens

50

50. Enterocyte repair in surviving rabbits following experimental infection with E. intestinalis takes:
a. 2 days
b. 6 days
c. 14 days
d. 21 days

c

51

51. Which of the following represents the range of prepatent periods for species of Eimeria in rabbits?
a. 5-12 days
b. 2-3 weeks
c. 1-7 days
d. 4-5 weeks

a

52

52. True or False:  Clinical signs of Eimeria infection in rabbits is mostly frequently observed in neonatal kits.

False; observed in post-weaning period

53

53. In rabbits, why does dissemination of “night feces” not seem to play a big role in transmission of coccidia?

oocytes sporulate at room temperature

54

54. True or False:  In rabbits, immunity against one strain of Eimeria gives protection against other strains.

False

55

Microscopic changes associated with intestinal Eimeria infections in rabbits are typically found where?

Caudal half of small intestine and cecum

56

56. Which of the following can be used to diagnose coccidial infections in rabbits?
a. Fecal flotation
b. Mucosal scrapings
c. Histopathology
d. All of the above

d

57

57. What is the most significant genus and species causing hepatic coccidiosis?

Eimeria stiedae

58

58. How soon after ingestion of sporulated oocyts can sporozoitesbe observed in the liver?
a. 12 hrs
b. 24 hrs
c. 48 hrs
d. 96 hrs

c

59

59. True or False:  In hepatic coccidiosis schizogony occurs in epithelial cells of the bile ducts.

True

60

60. What is the prepatent period of Eimeria stiedae?
a. 5-7 days
b. 15-18 days
c. 2-3 weeks
d. 4-6 weeks

b

61

61. True or False:  E. stiedae most commonly infects weanling rabbits.

True

62

62. True or False:  Raised, linear bosselated, yellow to gray circumscribed lesions scattered throughout the parenchyma of the liver accurately describes hepatic coccidiosis gross liver findings.

True

63

63. True or False:  In rabbits infected with E. stiedae, infected bile ducts have hypoplastic epithelium with papillary projections.

False; hyperplastic epithelium

64

64. True or False:  Histologic changes induced by E. stiedae are pathognomonic.

True

65

65. True or False:  E. cuniculi is an obligate intracellular microsporidian.

True

66

66. What are characteristic features of E. cuniculi that have caused taxonimists to place it as a microsporidian and not a protozoa?

Absence of diplokarya observed in protozoa and presence of coiled polar filament in the mature spore stage

67

67. Encephalitozoonosis causes a more severe disease in which of the following animals?
a. Mice and monkeys
b. Pigs and monkeys
c. Mice and guinea pigs
d. Dogs and monkeys

d

68

68. True or False:  E. cuniculi can infect rabbits by both oral and respiratory routes.

True

69

Initially, which of the following are the main target organs of E. cuniculi?
a. Brain, liver, kidney
b. Liver, spleen, lung
c. Lung, liver, kidney
d. Lung, brain, spleen

c. Lung, liver, kidney

Those with high blood flow

 

70

True or False:  E. cuniculi spores survive for less than 1 week at 4C, but may remain viable for at least 6 weeks at 22C

True

71

71. Which of the following best describes the histological lesions observed with E. cuniculi?
a. Granulomatous
b. Plasmacytic
c. Lymphocytic
d. Suppurative

a

72

72. True or False:  E. cuniculi spores are gram positive.

True

73

73. What colour does carbol fuchsin stain E. cuniculi spores?

Purple

74

74. True or False:  CNS involvement of E. cuniculi occurs very quickly after infection.

False; 30 d post-exposure

75

75. In rabbits infected with E. cuniculi, uvetis and cataracts are a common finding in which of the following breeds:
a. New Zealand Whites
b. Cottontails
c. Hares
d. Dwarf rabbits

d

76

76. What staining differentiates Toxoplasma from E. cuniculi?

Toxoplasma: Gram negative, PAS negative, stains well with H&E

E. cuniculi: Gram positive, PAS positive, does NOT stain well with H&E, are acid fast

77

77. Which of the following is the most widely used diagnostic test for E. cuniculi?
a. Serology
b. PCR
c. Intradermal skin test
d. Culture

a

78

78. True or False:  There are confirmed cases of E. cuniculi infection in human AIDS patients.

True

79

79. True or False:  Cyptosporidia is a common primary pathogen in rabbits.

False

80

80. What is the natural host for Baylisascaris procyonis?

Racoon

81

81. True or False:  Embryonation of B. procyonis is a rapid process.

False; takes 30 d

82

82. How long can a B. procyonis egg survive in the environment?
a. 3 weeks
b. 1 year
c. 6 months
d. 3 months

b

83

83. True or False:  Humans are at risk of zoonosis from rabbits infected with B. procyonis.

False; rabbit is a dead end host

84

84. True or False:  Psoroptes cuniculi spends its entire life span in the external ear.

True

85

85. How is P. cuniculi most easily diagnosed?

Wet mount prep from ear

86

86. Which stage of Sarcoptes scabiei evokes a hypersensitivity reaction?

The feeding activity of larvae and nymphs

87

87. Give two contributing factors to barbering.

Boredom and low roughage diets

88

88. True or False: Exfoliative dermatosis is a pruritic skin disease.

False

89

89. Which bacteria is most commonly associated with ulcerative pododermatitis?

Staph. aureus

90

90. Where is the most common site of vertebral fracture/dislocation?

Lumbosacral region (L7)

91

91. What is the common name for Trichobezoar?

Hairball

92

92. List 4 contributing factors to the development of gastric trichobezoars.

Insufficient dietary roughage, excessive grooming, poor gastric motility, sedentary lifestyle

93

93. In which breed of rabbit has cardiomyopathy associated with ketamine/xylazine administration been observed?

Dutch Belted

94

94. Finding pale mineralized streaks in musculature on post-mortem in a rabbit would be consistent with which disease?

Vitamin E deficiency

95

95. List 4 predisposing factors to pregnancy toxemia.

obesity, fasting, hereditary disposition, impaired blood flow to uterus, pituitary dysfunction

96

96. Mild anemia, tremors and posterior ataxia is consistent with which toxicosis?

Lead

97

97. Congenital glaucoma is most common in which breed?

New Zealand White

98

98. True or False:  Congenital glaucoma is known to be a painful condition.

False

99

99. Which of the following describes the inheritance of congenital glaucoma:
a. Sex linked
b. Autosomal recessive with complete penetrance
c. Autosomal dominant
d. Autosomal recessive, with incomplete penetrance

d

100

100. In rabbits with malocclusion the _________ is abnormally long relative to the __________.

mandible, maxilla

101

101. What is the most common spontaneous tumor occurring in Oryctolagus cuniculus?

Uterine adenocarcinoma

102

102. Uterine adenocarcinomas usually spread to the:
a. Lung and liver
b. Lung and kidney
c. Kidney and liver
d. Lung and bone

a

103

103. Which virus is associated with lymphoproliferative disorders in cottontail rabbits?

Herpesvirus sylvilagus

104

104. True or False:  Thymomas are a common tumor indomestic rabbits.

False

105

105. Teat and mammary gland enlargement are often associated with which tumor?

pituitary gland tumors