Test your basic knowledge |

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. What structure of the knee is described thus? - Prevents abduction






2. What CNs arise from x The medulla?






3. What is the ratio of pulmonary to systemic blood flow?






4. What malignant bone tumor is associated with familial retinoblastoma?






5. What transient deficiency may result in a hypercoagulable state if warfarin is given alone?






6. What bronchogenic carcinoma is associated with an elevated level of Ca2+ - involves keratin pearls - occurs in men more than women - is associated with smoking - occurs in the major bronchi - and is seen in the central areas of the lung?






7. What subset of CD4 T cells is responsible for mast cell and eosinophil precursor proliferation?






8. What term describes the reflex that increases the curvature of the lens - allowing near vision?






9. Name the cancer associated with the following oncogenes. (Some may have more than one answer) x Ki - ras and erb -2






10. What is the rate - limiting step in a conduction of a NMJ?






11. From What embryonic structure are the following structures derived? - The right and left atria






12. What are the three branches of the celiac trunk?






13. What chromosome codes for HLA gene products?






14. What is the maximum rate possible with a given amount of enzyme?






15. What enzyme is deficient in the following glycogen storage disease? - von Gierke's disease






16. What is the term for the difference between the highest and the lowest score in a population?






17. What triggers phase 3 of the action potential in a ventricular pacemaker cell?






18. What is the most common one? - Vasculitis






19. What complement factor deficiency leads to x Increased susceptibility to pyogenic infections?






20. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Cardiac muscle






21. If the family member of a patient asked you to withhold information - would you?






22. Inhibits glucose uptake in skeletal muscle.






23. Where are the tonsillar tissues?


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






25. What enzyme of the TCA cycle catalyzes the production of the following: x NADH (hint: 3 enzymes)






26. What AD disease is associated with chromosome 4p; does not present until the person is in his or her 30s; and involves atrophy of the caudate nucleus - dilatation of the lateral and third ventricles - and signs of extrapyramidal lesions?






27. What is the term to describe jumping from one topic to the next without any connection?






28. What type II hypersensitivity disorder is defined as x Autoantibodies directed against ACh receptors?






29. On the venous pressure curve - What do the following waves represent? - V wave?






30. What is the most common one? - Cancer of the vulva






31. What structure is derived from the prochordal plate?






32. What is the most potent NMJ blocker and also has no cardiovascular side effects?






33. Where do the primordial germ cells arise?






34. Are used in the management of an acute asthmatic attack.






35. Name the most common type or cause - Infantile diarrhea






36. Name these cluster A personality disorders: x Socially withdrawn - seen as eccentric but happy to be alone






37. Name the lipoprotein based on the following characteristics - apo E - apo B-100 - apo C- II






38. Name the most common cause - Blindness worldwide






39. What is the only neuroglial cell of mesodermal origin?






40. What IL down - regulates cell mediated immunity?






41. What is the venous and arterial stretch receptors' function regarding the secretion of ADH?






42. What ribosomal subunit sizes do eukaryotic cells have?






43. What disorder is associated with decreased platelet count - prolonged PT and PTT - decreased fibrinogen - and increased fibrin split products (D- dimers)?






44. What CNs are affected if there is a lesion in x The upper pons?






45. In what rare lung malignancy have 90% of patients had an occupational exposure to asbestos?






46. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Chromium and nickel






47. What component of an ECG is associated with the following? - Ventricular repolarization






48. What is the term for excessive amounts of granulation tissue that can block re - epithelialization and wound healing?






49. What syndrome is characterized by sweating - insomnia - nausea - diarrhea - cramps - delirium - and general restlessness secondary to MAOI and SSRI in combination?






50. What part of the 30S ribosome binds to the Shine - Dalgarno sequence?