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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 is the most common one? - Route of spread in pyogenic osteomyelitis






2. What family do the following viruses belong to? - Measles






3. What is the function of the arachnoid granulations?






4. Which is the conditioned response - the conditioned stimulus - the unconditioned response - the unconditioned stimulus in this case? A patient has blood withdrawn and faints. The next time she goes to have blood taken - she faints at the sight of the






5. Which a - blocking agent is used to treat refractory hypertension and baldness?






6. What glycoprotein allows platelets to adhere to each other through the use of fibrinogen?






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






8. At what vertebral level does the trachea bifurcate?






9. What two CNs are responsible for the carotid body and sinus reflexes?






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






11. What structure of the knee is described thus? - Prevents anterior displacement and has lateral - to - medial attachment on the tibia






12. What muscle is the chief flexor of the hip?






13. What form of anemia is diagnosed with sucrose lysis test and Ham test?






14. What do UMNs innervate?






15. What stage of sleep is associated with somnambulism?






16. What are the six substances that promote the secretion of insulin?






17. Name the ocular lesion; be specific - A right lateral compression of the optic chiasm (as in aneurysms in the internal carotid artery)






18. What major side effect of neuroleptics is characterized by pill rolling - shuffling gait - and tremors that abate during sleep?






19. Name the structure that enters or exits the following foramina: x Cribriform plate






20. Name the type of exudate - given the following examples - Parasitic infection






21. A 20-year - old woman goes to the ER with ptosis - diplopia - weakness in her jaw muscles when chewing - and muscle weakness with repeated use. What is your diagnosis?






22. Place in order from fastest to slowest the rate of gastric emptying for CHO - fat - liquids - and proteins.






23. At What three sites can the HMP shunt enter into glycolysis?






24. At which three sites in the body is T4 converted to T3?






25. Name the cancer associated with the following tumor markers. (Some may have more than one answer.) x Placental alkaline phosphatase






26. Name the form of spina bifida - Meninges and spinal cord project through a vertebral defect






27. What paraphilia is defined as x Sexual fantasies or practices with animals?






28. What component of the corneal reflex is lost in a CN VII deficit?






29. Under normal conditions - What is the main factor that determines GFR?






30. What type of potential is characterized as being an all - or - none response - propagated and not summated?






31. What is the most common form of dementia?






32. What protein deficiency results in respiratory distress syndrome of newborns?






33. Name the type of hypersensitivity reaction based on the following properties - Circulating Ab - Ag immune complexes deposited in the tissue result in neutrophil attraction and the release of lysosomal enzymes.






34. What is the most common one? - Site for atherosclerotic plaques in the abdominal aorta






35. By What age should children be able to draw the following figures? - Rectangle






36. What is the name for inability to stop a movement at the intended target?






37. Name the thalamic nucleus based on its input and output - Input from medial lemniscus and the spinocerebellar tracts; output to the primary somatosensory cortex






38. What viral infection in patients with sickle cell anemia results in aplastic crisis?






39. Name the form of spina bifida - Defect in the vertebral arch






40. What is the name of demyelination of the corticospinal tract and the dorsal column in the spinal cord due most commonly to a vitamin B12 deficiency?






41. What is the most common genetic deficiency resulting in hemolytic anemia?






42. What three complement fragments are also anaphylatoxins?






43. What enzyme catalyzes the rate - limiting step in the TCA cycle?






44. What form of conditioning is defined as a new response to an old stimulus resulting in a consequence?






45. Cherry red intoxication is associated with what form of poisoning?






46. Name the phase of the ventricular muscle action potential based on the following information: x Slight repolarization secondary to potassium and closure of the sodium channels






47. What are the four ways to increase TPR?






48. What subset of CD4 helper T- cell function is helping the development of CD8 T cells?






49. What Ag is needed to diagnose an infectious patient with hepatitis B?






50. Patients with _______________ have B cells in the peripheral blood.