practice MCQs

Question 1

Emphysema of the guttural pouches of horses is most often caused by infection with a species of:

a. Candida
b. Streptococcus
c. Rhodococcus
d. Bacillus
e. Salmonella

Answer 1

B. strep

Question 2

Necropsy of an equine fetus aborted late in pregnancy reveals pneumonia with fibrinonecrotic casts in the bronchi. Which organism is most likely the cause of the abortions?

a. Aspergillus organisms
b. equine herpes virus
c. equine viral arteritis virus
d. Streptococcus equi
e. Taylorella equigenitalis

Answer 2

B. equine herpes virus

Question 3

Chronic obstructive pulmonary disease in horses causes which gross lesion?

a. complete collapse of the lung
b. diffuse consolidation of the lung
c. diffuse pleuritis
d. tracheal collapse
e. overinflation of the lung

Answer 3

E. overinflation of the lung

Question 4

Histopathologic examination of tissues from an aborted late-term bovine fetus reveals multifocal hepatic necrosis. What is the most likely cause of the abortion?

a. brucellosis
b. aspergillosis
c. infectious bovine rhinotracheitis
d. bovine viral diarrhea
e. bovine respiratory syncytial virus infection

Answer 4

C. IBR

Question 5

Necropsy of a 350-kg steer, recently purchased at a sale barn, reveals severe fibrinous pleuritis and consolidation of 60% of the cranioventral regions of the lungs. What is the most likely cause of these findings?

a. Mycoplasma infection
b. infectious bovine rhinotracheitis
c. Pasteurella multocida infection
d. Pasteurella haemolytica infection
e. bovine virus diarrhea

Answer 5

D. Pasterurlla haemolytica infection

Question 6

Gross examination of the lungs of a dog that died with respiratory disease reveals multiple 1 to 10 mm, firm, tan nodules widely disseminated in all lobes. Impression smears reveal spherical, 10 to 12 micrometer yeast organisms with double countoured walls. What is the most likely cause of these findings?

a. histoplasmosis
b. coccidioidomycosis
c. blastomycosis
d. cryptococcosis
e. aspergillosis

Answer 6

C. Blastomycosis

Question 7

Systemic Aspergillus terrus infection is most often seen in which dog breed?

a. English bulldog
b. Bernese mountain dog
c. Doberman pinscher
d. German shepherd
e. Boxer

Answer 7

D. GSD

Question 8

Upper respiratory infections in cats may be caused by several etiologic agents. Which one also causes corneal ulcers?

a. calicivirus
b. Chlamydia psittaci
c. herpesvirus
d. reovirus
e. Mycoplasma felis

Answer 8

C. Herpesvirus

Question 9

Severe fibrinous pleuropneumonia in pigs may be caused by any of the following except:

a. Actinobacillus pleuropneumoniae infection
b. Streptococcus suis infection
c. swine influenza
d. Salmonella choleraesuis infection
e. Pasteurella multocida infection

Answer 9

C. Swine influenza

Question 10

Peribronchiolar lymphoid hyperplasia is characteristic of which respiratory disease in swine?

a. swine influenza
b. porcine reproductive and respiratory syndrome
c. Pasteurella multocida infection
d. Mycoplasma infection
e. Metastrongylus apri infection

Answer 10

D. Mycoplasma infection