navle sample practice test exam 2023 with correct answers

1. Which of the following is the most common cause of maxillary sinusitis in the horse? (A) Bacterial lower respiratory tract disease extending into the sinus (B) Infection and abscessation of a tooth root extending into the sinus (C) Inhaled foreign bodies lodging in the sinus (D) Puncture wounds extending into the maxillary sinus correct answersB 2. An African gray parrot that is presented for necropsy is suspected to have psittacosis. Which of the following findings is most likely to confirm the diagnosis? (A) Hepatomegaly and splenomegaly on gross examination (B) Identification of the causative organism by Gram's stain (C) Isolation and identification of Chlamydia psittaci (D) Presence of acid-fast organisms in the liver correct answersC 3. A 5-year-old Holstein cow is being evaluated because of inappetence. On auscultation, there is pinging over the left ninth and 10th intercostal spaces, on a line between the tuber coxae and the elbow. On paracentesis immediately ventral to the pinging area, there are a few drops of green fluid with a pH of 6.0. Which of the following is the most likely source of the fluid? (A) Abomasum (B) Cecum (C) Omasum (D) Rumen (E) Spiral colon correct answersD 4. A 3-month-old puppy is being evaluated because of weight loss, chronic diarrhea, and steatorrhea. Direct microscopic examination of saline smears of the extremely watery feces shows motile piriform trophozoites. Which of the following is the most appropriate pharmacotherapy? (A) Dichlorvos (B) Ivermectin