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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 area of the cerebral cortex with the function described: x Speech; critical for personality - concentration - initiating and stopping tasks (do one thing and begin a new without completion of the first) - abstract thought - and memory and hi






2. Using Laplace's relationship regarding wall tension - why is the wall tension in an aneurysm greater than in the surrounding normal blood vessel's wall?






3. What is the name of the major chemotactic agent released from x Bacteria?






4. What agent used in the treatment of BPH and baldness is a 5- a - reductase inhibitor?






5. What syndrome is due to a deficiency of surfactant?






6. The opening of what valve indicates the termination of isovolumetric relaxation phase of the cardiac cycle?






7. Name the thalamic nucleus based on its input and output - Input from the optic tract; output projects to the primary visual cortex of the occipital lobe






8. What is used as an index for both adrenal and testicular androgens?






9. What two post - transcriptional enzymes in collagen synthesis require ascorbic acid to function properly?






10. 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






11. What adult structures are derived from preotic somites?






12. What is the term for headaches - inability to concentrate - sleep disturbances; avoidance of associated stimuli; reliving events as dreams or flashbacks following a psychologically stressful event beyond the normal range of expectation?






13. Name the area of the cerebral cortex with the function described: x Language - memory - and emotion (Hint: herpesvirus infects here commonly)






14. Name the hepatitis virus based on the following information - Naked capsid RNA picornavirus






15. To differentiate central from nephrogenic diabetes insipidus - after an injection of ADH - which will show a decreased urine flow?






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






17. What is the neurotransmitter at the K- receptor?






18. By What age should children be able to draw the following figures? - Diamond






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






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






21. How many pairs of spinal nerves are associated with x Sacral vertebrae?






22. What tumor is seen in the 2- to 4-year - old age group; does not cross the midline; has immature glomeruli - tubules - and stroma; and metastasizes late to the lungs?






23. Are reabsorbed in the gallbladder.






24. What type of lysosome is formed when lysosome fuses with a substrate for breakdown?






25. Because of their vasodilation action - these cause migraines.






26. Name the primary vesicle the following structures are derived from (proencephalon - mesencephalon - or rhombencephalon) - Cerebral hemispheres






27. What CN is associated with the x Third pharyngeal arch?






28. What component of the trigeminal nuclei x Supplies the muscles of mastication?






29. What enzyme catalyzes the rate - limiting step in gluconeogenesis?






30. What enzyme of the TCA cycle catalyzes the production of the following: x FADH2






31. What are the five pieces of information considered necessary for fully informed consent?

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32. What is the term for a congenital absence of the ganglionic cells of the Auerbach and Meissner plexus in the rectum and sigmoid colon?






33. What is the period between going to bed and falling asleep called?






34. If the pH is low with increased CO2 levels and decreased HCO3- levels - What is the acid - base disturbance?






35. What are the five AAs that are both ketogenic and glucogenic?






36. What embryonic structure forms the adult female structures? - Ovarian and round ligaments






37. What is the most common one? - Benign GI tumor






38. What drug is used to prevent alcohol consumption by blocking aldehyde dehydrogenase?






39. What is the term for failure to give up infantile patterns of behavior for mature ones?






40. How do delusions - illusions - and hallucinations differ?






41. What are the two most common chains of the TCR?






42. What is the treatment for nephrogenic diabetes insipidus induced by lithium?






43. A 60-year - old man has back pain (compression spinal fracture) - hypercalcemia - increased serum protein - Bence - Jones proteinuria - and monoclonal M- spike on serum electrophoresis. What is your diagnosis?






44. Influenza - Vibrio cholera - hepatitis A - rabies - and adenovirus.






45. What bedside test is used to differentiate a dorsal column lesion from a lesion in the vermis of the cerebral cortex?

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46. What hormone - produced by the granulose cell - stimulates the endometrium to enter the proliferative phase?






47. With what stage of sleep are night terrors associated?






48. Indicates the patient has active pulmonary disease.






49. Name the type of mutation: x Unequal crossover in meiosis with loss of protein function






50. Name the type of exudate - given the following examples - Diphtheria infection






Can you answer 50 questions in 15 minutes?



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