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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 valve abnormality based on the following criteria: x Systolic murmur - increased preload and afterload - decreased aortic pulse pressure and coronary blood flow






2. How much dietary iodine is necessary to maintain normal thyroid hormone secretion?






3. Acts as the vertebral body of C1 allowing lateral rotation of the head. The first cervical vertebra has no vertebral body.






4. What two PGs are used to induce labor?






5. Are hydrolysis - oxidation - and reduction phase I or II biotransformations?






6. Are the following conditions associated with a negative or positive nitrogen balance? - Infection






7. Name the phase of the ventricular muscle action potential based on the following information: x Fast channels open - then quickly close - and sodium influx results in depolarization






8. What is the term for days 15 to 28 in the female cycle?






9. What is the most common one? - Germ cell tumor in men






10. Name the most common cause - Croup






11. Name the muscle type based on these descriptions: x Continuous involuntary contraction - uninuclear striated branched fibers - actin and myosin overlapping for banding pattern - dyadic T tubules - intercalated discs - troponin and desmin as a Z disc






12. What is the label given to an individual whose IQ is x 120 to 129






13. To What does failure to resolve separation anxiety lead?






14. What chronic inflammatory WBC is associated with IgE- mediated allergic reactions and parasitic infections?






15. What are the two precursors of heme?






16. What AA is a precursor of the following substances? - N2O






17. Name the most common type or cause - Meningitis in adults






18. What pathophysiologic disorder is characterized by the following changes in cortisol and ACTH? - Cortisol increased - ACTH decreased






19. What CNS demyelinating disease is characterized by diplopia - ataxia - paresthesias - monocular blindness and weakness - or spastic paresis?






20. Name the associated chromosome - VON Hippel - Lindau disease






21. What enzyme is inhibited by sulfonamides?






22. Name the antidote - Arsenic






23. What Brodmann area is associated with x Primary motor cortex?






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






25. What is the bone marrow maturation time for a phagocytic cell?






26. Which agent used in the treatment of asthma is a selective inhibitor of the lipoxygenase pathway?






27. Name the associated chromosome - Patau syndrome






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






29. In what compartment of the thigh is the profundus femoris artery found?

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30. What enzyme is deficient in acute intermittent porphyria?






31. In what organ system would you attempt to localize a sign for shaken baby syndrome'? What do you look for?

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32. Name the most common one - Chromosomal disorder






33. Lucid interval






34. What disease is seen in the 20- to 40-year - old age group - is more prevalent in women than men - involves diarrhea with or without bloody stools - starts in the rectum and ascends without skipping areas - includes pseudopolyps - and has a thickness






35. In What type of circuit is the total resistance always less than that of the individual resistors?






36. Are two different receptors with two different agonists characteristic of pharmacologic or physiologic antagonism?






37. Are hemorrhagic cerebral infarcts more commonly associated with embolic or thrombotic occlusions?






38. What is the effect of LH on the production of adrenal androgens?






39. Do the following structures pick up stain from hematoxylin or eosin? - Cytoplasm






40. What happens to the following during skeletal muscle contraction? - A band






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






42. What are the two essential fatty acids?






43. What disorder is described as having x Conscious symptoms with conscious motivation?






44. What is the most common one? - Form of vasculitis






45. What blotting technique uses the following for analysis? - DNA






46. When does most REM sleep occur - in the first or second half of sleep?






47. What disorder is due to a deficiency in the enzyme glucocerebrosidase?






48. What type of potential is characterized as graded - decremental - and exhibiting summation?






49. What drug that penetrates the blood - brain barrier is found in asthma preparations and used as a nasal decongestant?






50. Name the T- cell CD marker: x Essential for Ab isotype switching (for B cell binding)