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National Board Practice Questions - Quiz 1

Which of the following animals would be most likely to serve as a source of Trichinella spp. infection to humans in the U.S.?
Rabbit Sheep Cattle Bear Deer
This parasite ova was found on fecal flotation of a 5-year-old dog with a history of intermittent bloody diarrhea. Which of the following is the most appropriate labeled pharmacotherapy?
Pyrantel Ivermectin Metronidazole Trimethoprim-sulfa Fenbendazole
An egg (ova) of Pearsonema plica was detected on urine sediment examination of a 4-year-old neutered male mixed-breed dog with a history of cystitis. How did the dog become infected with this parasite?
Skin penetration of third-stage larvae Ingestion of earthworm containing third-stage larvae Ingestion of egg containing first-stage larvae Migration of third-stage larvae up urethra to embed in urinary bladder mucosa Ingestion of dung beetle containing third-stage larvae
To combat Texas cattle fever caused by Babesia bigemina, the vector tick, Boophilus annulatus, was eradicated from the United States through an ambitious program of intensive dipping of cattle. What aspect of the life cycle of this tick allowed the eradication program to be successful?
Boophilus annulatus is a one-host tick Boophilus annulatus prefers to feed on animals other than cattle Boophilus annulatus is a three-host tick Boophilus annulatus has low tolerance for conditions of high humidity Boophilus annulatus has a low tolerance for high temperatures
A 5-year-old gelding presents with ataxia and incoordination in all four limbs. A CSF tap reveals antibodies to Sarcocystis neurona. How did the horse most likely acquire this infection?
Transmission of sporozoites via the bite of a tabanid fly Ingestion of oocysts from the feces of an infected horse Ingestion of sarcocysts in the muscle tissue of an infected opossum Transmission of sporozoites via tick bite Ingestion of sporocysts from opossum feces in contaminated feed or water
This parasite was detected on fecal flotation of a 3-month-old puppy with acute diarrhea. Although many dogs will self-cure this parasite, you decide to prescribe a treatment. What treatment is most appropriate?
Sulfadimethoxine Fenbendazole Ivermectin Metronidazole Pyrantel
An adult budgie presents with severe crusting on the beak and cere which has resulted in severe deformity of the beak. What diagnostic assay is most likely to reveal the etiologic agent?
Serum chemistry profile Bacterial culture of the crusted material for the presence of Staphylococcus Microscopic examination of the crusted material for mites Radiographs to evaluate calcium deposition in the long bones Virus isolation attempts on the crusted material
West Nile virus is commonly transmitted to horses, people, and other animals via:
Fleas Mosquitoes Horse flies Ticks Biting midges
Which of the following groups of ectoparasites is not known to occur on pet birds?
Sucking lice (Anoplura) Chewing lice (Mallophaga) Fleas (Siphonaptera) Mites (Acari) All of these groups of parasites commonly occur on pet birds
An intact male feral kitten presents for routine examination. You notice large numbers of glistening white eggs adherent to the hair shafts on the dorsal and lateral aspect of the thorax. Closer inspection reveals several dorsoventrally flattened insects clinging to the hair shafts themselves. What parasite is this?
Phthirus Linognathus Hematopinus Pediculus Felicola
This egg was detected on flotation of feces from a 3-year old barn cat. How did the cat become infected with this parasite?
Ingestion of infected flea Ingestion of infected rodent Ingestion of infected rabbit Transmitted via bite of infected flea Transmitted via bite of infected rodent
A 5-month-old intact female barn kitten presents with a subcutaneous mass in her neck. Upon examination you notice an opening in the mass. This organism was removed with forceps. What parasite is this?
Oestrus Hypoderma Gasterophilus Cuterebra Cephenmyia
Which of the following are effective for the treatment of clinical coccidiosis in cattle?
Amprolium Metronidazole Decoquinate A and B All three drugs listed
Pigs become infected with the thorny-headed worm, Macracanthorhynchus hirudinaceus, upon:
Ingestion of free L3 from the environment Skin penetration by L3 from the environment Ingestion of L3 in larvated eggs from the environment Ingestion of an infected beetle containing a cystacanth stage Ingestion of L1 in the fresh feces of a fellow pig
Lice infestations on cattle are more common in the:
Winter Spring Summer Fall There is no seasonal pattern to louse infestation
Cats infected with Dirofilaria immitis:
Routinely develop severe reactions to administration of monthly heartworm preventatives due to rapid death of microfilaria Are usually microfilaremic, allowing diagnosis via Knott or filter test or examination of a wet mount of whole blood Occasionally develop disease due to aberrant migration of the worms, including to the central nervous system or ocular tissues Often harbor large numbers (>50) of adult worms Have not been shown to develop any significant clinical disease due to infection
Which of the following drugs is effective for treating Giardia and has the least toxicity problems associated with its use in dogs and cats?
Ivermectin Milbemycin Metronidazole Albendazole Fenbendazole
Fecal flotation on a 4-year-old intact male cat reveals this parasite ova. What clinical disease is this parasite most commonly associated with?
Cystitis Neurologic disease (circling, ataxia) Respiratory disease Vomiting Anemia
A rabbit with a severe ear infection caused by mites is brought to your clinic. The organism most likely responsible is:
Psoroptes cuniculi Otodectes cynotis Knemidocoptes mutans Sarcoptes scabiei Polyplax serrata
Anthelmintic resistance has been widely documented to occur in small strongyles (= cyathostomes) of horses with which of the following dewormers?
Pyrantel Fenbendazole Ivermectin Moxidectin A and B

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National Board Practice Questions - Quiz 1

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