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  1. What artery is most likely damaged in a femoral neck fracture?
    Medial femoral circumflex.
  2. What condition has elevated anti-Jo-1 antibodies and is associated with an increased risk for malignancies in general?
  3. What pulmonary defense mechanism is responsible for clearing particles less than 2um in size?
    Phagocytosis by macrophages in alveoli.
  4. What cells cannot utilize ketones for energy?
    • Erythrocytes
    • Hepatocytes.
  5. What drugs can increase lithium levels?
    • Thiazide diuretics
    • ACE I
    • NSAIDs.
  6. Why is primaquine added to choloroquine to treat malaria?
    Prevent relapse by eradicating latent hepatic infections.
  7. Arterial PaCO2 is a direct indicator of?
    Alveolar ventilation.
  8. HIV proteins p24 and p7 are encoded by what gene?
    gag - structural.
  9. A mutation in the protein kinase BRAF (V600E) is associated with which malignancy?
    Melanoma (40-60%).
  10. How is mucormycosis diagnosed?
    Histologic examination of affected tissue (mucosa).
  11. Aspirin causes metabolic acidosis, but also?
    Respiratory alkalosis - direct stimulation of medullary respiratory center -- first to occur.
  12. Which vitamin deficiency may take several years to become symptomatic despite no intake?
    Vit. B12.
  13. The nerves and vessels supplying the ovary are found in which ligament?
    Suspensory ligament.
  14. At what point of a pulmonary function curve is pulmonary vascular resistance the lowest?
  15. What enzyme is deficient in porphyria cutanea tarda?
    Uroporphyrinogen decarboxylase.
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