QUIZ CORNER

1. On transrectal palpation, how can the uterus of a cow that is 2 or 3 months' pregnant be differentiated from a uterus of comparable size in a cow with pyometra?

   1. slipping the chorioallantoic membrane

   2. asymmetry of the uterine horns

   3. the presence of a large corpus luteum

   4. fluctuation of the larger uterine horn

   5. the absence of follicles or a corpus luteum on the ovaries

2. What is the most important factor in determining how long it will take a drug to achieve steady state serum concentrations in a multiple-dose regimen?

   1. size of the dose

   2. number of doses

   3. route of elimination

   4. route of administration

   5. half-life

3. What are the toxic principles in chocolate that affect dogs?

   1. anagyrine alkaloids

   2. cyclic polypeptides

   3. L-cysteine and tryptophan

   4. methylxanthine alkaloids

   5. solanidine and ergonovine

4. In a multiple-cat household, what is most likely to precipitate redirected aggression?

   1. a new infant in the household

   2. a new adult (person) in the household

   3. the cat's inability to chase a squirrel it sees through a window

   4. the cat's inability to interact with a cat it sees through a window

   5. a change in the odor or appearance of another cat in the household

5. A 10-year-old Labrador retriever develops loss of balance that has progressed over the past 24 hours. The dog cannot walk, rolls to the left, and has hypersalivation, a severe left head tilt, and nonpositional horizontal nystagmus of both eyes, with the fast phase to the right. Conscious proprioception is normal, and the dog is alert and strong. Where is the lesion, and what is the most likely cause of these findings?

   1. right central vestibular lesion; meningioma

   2. left peripheral vestibular lesion; granulomatous meningoencephalomyelitis

   3. right peripheral vestibular lesion; old dog vestibular disease

   4. left peripheral vestibular lesion; old dog vestibular disease

   5. left central vestibular lesion; trauma

6. Which statement most accurately describes a characteristic of the parasympathetic nervous system?

   1. It reaches the abdomen largely through the splanchnic nerves.

   2. It has relatively long preganglionic and short postganglionic nerves.

   3. It communicates with spinal nerves via rami communicantes.

   4. It has cell bodies of preganglionic nerves located in the thoracolumbar spinal cord.

   5. It passes from the thorax to the head through the cervicothoracic ganglion.

7. Concerning fungal infections, which statement is least accurate?

   1. Immunity is primarily humoral.

   2. Immunity is primarily cell mediated.

   3. Chronic granulomatous infections are common.

   4. Animals or people with immunosuppression are often infected.

   5. Infected animals may develop a hypersensitivity reaction.

8. You and your spouse own a veterinary clinic in a small town. Every day, your 3-year-old daughter accompanies you to the office, where she plays in the reception area. After about 6 months, you note that your daughter is not sleeping well and is complaining that her anal area itches. Your pediatrician diagnoses pinworm infection. How did your daughter probably obtain her infection?

   1. your family dog

   2. a dog visiting your clinic

   3. eggs in feces-contaminated soil in your backyard

   4. another child

   5. your family horse

9. In central diabetes insipidus, what does polyuria-polydipsia result from?

   1. interference with the action of antidiuretic hormone in the kidney

   2. excessive release of antidiuretic hormone and then adrenocorticotropin

   3. constantly maintained permeability of the nephron to water

   4. lack or loss of antidiuretic hormone production or release

   5. primary polydipsia

10. Which statement most accurately describes vagal indigestion in cattle?

    1. a chronic debilitating disease with excessively rapid passage of digesta through the rumen

    2. a chronic debilitating disease in which the rumen atrophies to a very small size

    3. an acute disease characterized by tympany of the rumen

    4. a chronic debilitating disease with impaired passage of ingesta out of the rumen

    5. an acute disease characterized by fluid distension of the abdomen

(See p. 812 for answers.)