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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. What two forces affect movement of ions across a membrane?






2. At the level of rib 6 - the internal thoracic artery divides into What two arteries?






3. Name the lung measurement based on the following descriptions: x Additional volume that can be expired after normal expiration






4. What nerve is associated with the following functions? - Flex the wrist and digits - pronate the wrist and the LOAF (Lumbricales - Opponens pollicis - Abductor pollicis brevis - Flexor pollicis brevis) muscles of the hand






5. Are the following major or minor Jones criteria of rheumatic fever? - Subcutaneous nodules






6. How does cell diameter affect the conduction velocity of an action potential?






7. What ribosomal subunit sizes do eukaryotic cells have?






8. If no fertilization occurs - How many days after ovulation does the corpus luteum begin to degenerate?






9. All primary oocytes in females are formed By What age?






10. What are the three most common sites for left - sided heart embolisms to metastasize?






11. What is the most potent stimulus for glucagon secretion? Inhibition?






12. What is the most common form of inherited dwarfism?






13. What GI pathology can be caused by a patient taking clindamycin or lincomycin or by Clostridium difficile - ischemia - Staphylococcus - Shigella - or Candida infection?






14. What three cephalosporins are eliminated via biliary mechanisms?






15. What cell type in the bone is responsible for bone deposition?






16. What happens to cortisol levels in sleep - deprived individuals?






17. What type of GN - associated with celiac disease and dermatitis herpetiformis - has mesangial deposits of IgA - C3 - properdin - IgG - and IgM?






18. What DNA excision and repair enzyme is deficient in patients with xeroderma pigmentosum?






19. Name the type of exudate - given the following examples - Uremic pericarditis






20. Which hepatitis B Ag correlates with infectivity and viral proliferation?






21. If inserting a needle to perform a pleural tap or insertion of a chest tube - do you use the inferior or the superior border of a rib as your landmark? Why?






22. What facultative intracellular fungus is associated with hepatosplenomegaly?






23. What is the reservoir for the togavirus?






24. What is the costliest health care problem in the United States?






25. Name the cerebral vessel associated with the following vascular pathologies - Subarachnoid hemorrhage






26. What hormone is secreted by the placenta late in pregnancy - stimulates mammary growth during pregnancy - mobilizes energy stores from the mother so that the fetus can use them - and has an amino acid sequence like GH?






27. What type of bias is it when the information is distorted because of the way it is gathered?






28. A 70-year - old man complains of urinary urgency - nocturia - hesitancy - postvoid dribbling - urinary retention - and a PSA result of 6.5 ng/mL. What is your diagnosis?






29. What ovarian disease involves psammoma bodies?






30. What are the five K






31. What is the site of action of cholera toxin?






32. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Epidermis






33. What is the MCC of the following meningitides? - In those 12 months to 6 years of age






34. What antiviral agent for ganciclovir - resistant infections has limited utility because of its nephrotoxic side effect?






35. Neurofibrillary tangles






36. Name the antidote - Cyanide






37. If a patient asks you a question and you do not know the answer - do you tell a white lie or simply not respond?






38. What enzyme - induced by insulin and activated by apo C- II - is required for chylomicron and VLDL metabolism?






39. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Nitrosamines






40. What virus causes hoof - and - mouth disease?






41. Which way does the Hgb - O2 dissociation curve shift in patients with CO poisoning?






42. What antiviral agents inhibit neuraminidases of influenza A and B?






43. What is the primary predisposing factor for vascular dementia?






44. What type of crystals are associated with gout?






45. What are the following changes seen in the luminal fluid by the time it leaves the PCT of the nephron? - Osmolarity






46. Increases your risk factor for testicular cancer.






47. Which type of cerebral herniation is associated with CN III palsy?






48. Name the type of necrosis - Seen as dead tissue with coagulative necrosis






49. What muscle of the middle ear is innervated by the mandibular division of CN V?






50. WBCs in the urine