NBME 28 Exam Questions and Answers
Unconscious prioprioception mediated by what - Ans:-Cerebellum
Supination of forearm by what muscle - Ans:-Biceps brachii
Aminoglycosides work synergistically with what antibiotic class? - Ans:-Penicillins
Lesion demonstrating asymmetry, irregular borders, var...
Biopsy showing malignant, small dark blue tumor cells lacking nucleoli with a high nuclear:cytoplasm
ratio and expressing cytokeratin, chromogranin, and synaptophysin - Ans:✔✔-Pulmonary small cell
carcinoma; may be associated with paraneoplastic syndromes
Mechanism of regeneration of hepatocytes and renal tubular epithelial cells - Ans:✔✔-Recruitment of
quiescent cells from G0 into the cell cycle
Normal S1, widely split S2 that does not change with respiration, grade 3/6 holosystolic murmur that is
loudest at the lower left eternal border and radiates to the upper left eternal border - Ans:✔✔-Atrial
septal defect
Cell cycle phase where DNA replication occurs - Ans:✔✔-S phase
Cell cycle phase where enzymes necessary for DNA replication occurs - Ans:✔✔-G1 phase
MOA of metformin - Ans:✔✔-Inhibits hepatic gluconeogenesis and increases glucose uptake in
peripheral tissues (peripheral sensitivity to insulin)
Ovarian tumor associated with decreased serum concentrations of gonadotropins and marked increase
in circulating estrogens - Ans:✔✔-Granulosa cell tumorsok
Hardy Weinberg for X-linked diseases - Ans:✔✔-Frequency of affected males = q
Most common malignancy that metastasizes to liver - Ans:✔✔-Colonic CA
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