BCSE Cheat Sheet 2026

The 30 highest-yield BCSE facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. A horse with equine metabolic syndrome (EMS) typically shows which metabolic abnormality as the primary feature? → Peripheral insulin dysregulation (hyperinsulinemia and insulin resistance)
2. Which organism is the most common cause of contagious equine metritis (CEM)? → Taylorella equigenitalis
3. In the context of pharmacodynamics, how does a non-competitive antagonist affect the agonist dose-response curve? → Reduces the maximal response (Emax) without changing the EC50.
4. Body condition scoring (BCS) in dogs uses which scale and what score indicates ideal body condition? → 1–9 scale; a score of 4–5 indicates ideal condition
5. Hypophosphatemia in postparturient dairy cows is most commonly associated with which condition? → Downer cow syndrome following hypocalcemia (milk fever)
6. A cow presents with a soft, fluid-filled uterus and bilateral enlarged uterine horns at 4 weeks post-calving. The most likely diagnosis is: → Pyometra
7. Which of the following best describes the mechanism of action for local anesthetics such as lidocaine and bupivacaine? → They block voltage-gated sodium channels, preventing nerve impulse propagation.
8. Which of the following sets of clinical pathology findings is most consistent with a diagnosis of disseminated intravascular coagulation (DIC)? → Thrombocytopenia, prolonged PT, prolonged aPTT, elevated FDPs
9. Which kidney stone kind is most prevalent among the following? → Calcium oxalate
10. Which nutrient deficiency causes 'white muscle disease' (nutritional myodegeneration) in calves and lambs? → Selenium and/or vitamin E deficiency
11. Which of these doesn't belong in the pelvic girdle? → Scapula
12. West Nile virus in horses produces encephalomyelitis and is transmitted primarily by which vector? → Culex mosquitoes
13. Which of the following statements most accurately describes a key physiological difference between the avian and mammalian respiratory systems? → Birds have a unidirectional flow of air through their lungs, facilitated by air sacs.
14. Which breed of dog is most commonly affected by vaginal hyperplasia (vaginal prolapse) during proestrus/estrus? → Boxer and English Bulldog
15. The amino acid taurine is conditionally essential in cats primarily because cats have limited ability to do which of the following? → Synthesize taurine from cysteine due to low cysteine sulfinic acid decarboxylase activity
16. Which muscle is involved in forearm flexion? → Biceps brachii
17. The zoonotic bacterium Francisella tularensis is most commonly transmitted to humans through which route? → Arthropod bites (ticks, deer flies) or contact with infected rabbit tissues
18. What anatomical structure unites the two hemispheres of the brain? → Corpus callosum
19. Which histological feature best describes chronic inflammation? → Plasma cell infiltration
20. A cat presenting with posterior paresis and cervical ventroflexion should raise clinical suspicion for deficiency of which nutrient? → Thiamine (vitamin B1)
21. In cattle, the corpus luteum (CL) can be lysed using exogenous prostaglandin F2α (PGF2α) between which days of the estrous cycle? → Days 5–16
22. Dermatophytosis in cats is most commonly caused by which organism? → Microsporum canis
23. What is the main pathogenic mechanism that causes diabetes mellitus type 1? → Autoimmune destruction of beta cells
24. A drug that has a high first-pass metabolism is administered orally. What is the most likely consequence of this characteristic? → The concentration of the drug in systemic circulation will be significantly reduced.
25. What is the term for the failure of one or both testes to descend into the scrotum in male dogs? → Cryptorchidism
26. Which stage of the canine estrous cycle is characterized by vaginal cornification >80% and a marked decrease in neutrophils on cytology? → Estrus
27. Which organism causes 'Potomac horse fever' (equine monocytic ehrlichiosis) in the United States? → Neorickettsia risticii
28. Which of the following describes Crohn's disease characteristically? → Skip lesions
29. Feline infectious peritonitis (FIP) is caused by a mutated form of which virus? → Feline enteric coronavirus
30. What is the primary function of the soda lime granules within the canister of a rebreathing anesthetic circuit? → To chemically absorb exhaled carbon dioxide.