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USMLE Step 1 Prep

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Name the compartment of the mediastinum associated with the following thoracic structures: Thoracic duct






2. When does the hydrostatic pressure in Bowman's capsule play a role in opposing filtration?






3. Why is the cell's resting membrane potential negative?






4. If a virus has positive sense RNA - can it be used as mRNA or is a template needed?






5. What topoisomerase makes ssDNA cuts - requires no ATP - relaxes supercoils - and acts as the swivel in front of the replication fork?






6. What seven structures are found in more than one mediastinum?






7. After a longstanding left - to - right shunt reverses - causing cyanosis - and becomes a right - to - left shunt - What is it termed?

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8. What CNs arise from x The medulla?






9. Name the compartment of the lower extremity and the nerve based on its movements - Dorsiflex the foot - extend the toes - and invert the foot






10. What embryonic structure forms the adult female structures? - Labia minora






11. What is the function of the cerebellum?






12. Which anticonvulsant is also used in the treatment of bipolar disorder and for migraine headaches?






13. Name the macrophages by location: x Liver






14. Name the cancer associated with the following oncogenes. (Some may have more than one answer) x hst -1 - int -2 - erb -2 - and erb -3






15. Thyroid _____ is a measure of its function.






16. Name these immature defense mechanisms: x Inability to remember a known fact (aware of forgetting)






17. What part of the heart forms x Posterior wall?






18. What class of drugs is used in the treatment of demineralization of the bone?






19. Which PG maintains patency of the ductus arteriosus and is used in the treatment of primary pulmonary HTN?






20. Name the six vitamin K- dependent coagulation factors.






21. What is the term for a RBC that has a peripheral rim of Hgb with a dark central Hgb - containing area?






22. What type of foods should patients taking MAOIs avoid? Why?






23. What cell surface marker is found on blood B cells?






24. Near the end of pregnancy - what hormone's receptors increase in the myometrium because of elevated plasma estrogen levels?






25. Which dimorphic fungus is endemic in the Ohio - Mississippi - Missouri - and Eastern Great Lakes - is found in soil with bird and bat feces - and is associated with infections in spelunkers and chicken coop cleaners?






26. What is the DOC for coccidioidomycosis?






27. If the occurrence of one event had nothing to do with the occurrence of another event - How do you combine their probabilities?






28. What hormone can be affected by dopamine release in the tuberoinfundibular pathway?






29. Name the lipoprotein based on the following characteristics - apo A-1 - apo E - apo C- II






30. By which process do Abs make microorganisms more easily ingested via phagocytosis?






31. Is an embryologic foregut derivative.






32. What cytoplasmic organelle carries the enzymes for elongation and desaturation of fatty acyl CoA?






33. What is the most common one? - Malignant thyroid tumor






34. What gram - positive anaerobic rod with branching filaments is a component of the normal flora of the mouth and female genital tract and is responsible for draining abscesses with sulfur granules in the exudates?






35. What type of hepatitis has the highest mortality rate among pregnant women?






36. What cell in chronic inflammation is derived from blood monocytes?






37. Name the following descriptions associated with bacterial endocarditis: x Retinal emboli






38. What is the most common one? - Pituitary adenoma






39. Name the MCC - Pneumonia in an HIV- positive patient with CD4 less than 200






40. What is the leading cause of school dropout?






41. What is the most potent male sex hormone?






42. Are salivary secretions hypertonic - hypotonic - or isotonic?






43. What is the most common one? - Eye tumor in children






44. What area of the limbic system is responsible for attaching emotional significance to a stimulus?






45. What triad consists of endothelial injury - changes in laminar flow - and hypercoagulation?






46. The vertebral artery is a branch of What artery?






47. What is the term for the appearance of the kidney in malignant hypertension (it has petechiae on its surface)?






48. Both submandibular and sublingual glands are innervated by CN VII (facial) and produce mucous and serous secretions. Which one mainly produces serous secretions?






49. What component of the ANS is responsible for movement of semen from the epididymis to the ejaculatory ducts?






50. Deposits in the oral cavity.