USMLE Step 1 Prep
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USMLE Step 1 Prep
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25 Questions

1. What two HIV regulatory genes down - regulate MHC class I expression in the host?

2. What are the four functions of SER?

3. In a topographical arrangement of the cerebellar homunculus map - What area or lobe x Is involved in motor planning?

4. The duodenal - jejunal flexure is suspended from the posterior abdominal wall by what?

5. Are seen in medullary carcinoma of the thyroid.

6. What phase of the cell cycle are the following antineoplastic agents specific for? - Nitrosoureas

7. What blotting technique uses the following for analysis? - Protein

8. In a topographical arrangement of the cerebellar homunculus map - What area or lobe x Controls distal musculature?

9. There is no _______ of an IV- administered drug.

10. Name the stages of sleep with these EEG patterns: x Sawtooth waves - random low voltage pattern

11. What are the five hormones produced by Sertoli cells?

12. What four factors shift the Hgb - O2 dissociation curve to the right? What is the consequence of this shift?

13. Name the most common type or cause - Panhypopituitarism

14. What is the vector of African sleeping sickness?

15. Keratin pearls

16. Why is the clearance of creatinine always slightly greater than the clearance of inulin and GFR?

17. Name the type of hypersensitivity reaction based on the following properties - Reaction - mediated by sensitized T- cells

18. Is Dubin - Johnson or Rotor syndrome associated with black pigmentation of the liver?

19. What neuronal cell bodies are contained in the intermediate zone of the spinal cord? (T1- L2)

20. Outburst to cover up true feelings (emotion is covered - not redirected).

21. What are the pharmacologic effects seen sexually with x Serotonin?

22. Which benzodiazepine has the shortest half - life?

23. How does the sympathetic nervous system affect insulin secretion?

24. What primary acid - base disturbance is caused by a gain in fixed acid forcing the reaction to shift to the left - decreasing HCO3- and slightly increasing CO2?

25. What microaerophile is a motile gram - negative curved rod with polar flagella that causes infectious diarrhea at low doses (<500)?

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