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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. In the window phase of a hepatitis B infection - which Abs do you see?






2. Starry sky appearance of macrophages is pathognomonic of what lymphoma?






3. A patient goes to the ER with signs and symptoms of biliary colic. Which opioid analgesic do you choose?






4. What is the term for the number of new events occurring in a population divided by the population at risk?






5. Name the compartment of the mediastinum associated with the following thoracic structures: Vagus nerve






6. Name the most common type or cause - Cushing syndrome






7. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Vinyl chloride






8. What muscle or muscles are innervated by the following nerves? - Upper subscapularis nerve






9. What disorder is described as having x Conscious symptoms with unconscious motivation?






10. Name the type of graft described by these transplants: x From one site to another on the same person






11. Replacing normal affect with 'brain power'






12. What medication is used to help alcoholics avoid relapse by decreasing glutamate receptor activity?






13. Name the laryngeal muscle described by the following: x Adducts the vocal ligaments - closes the air passageway during swallowing - and allows phonation






14. What complex is needed for propionyl CoA carboxylase?






15. What area of the hypothalamus is responsible for recognizing a decrease in body temperature and mediates the response to conserve heat?

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16. What causes a skeletal muscle contraction to terminate?






17. If the occurrence of one event had nothing to do with the occurrence of another event - How do you combine their probabilities?






18. What pattern of inheritance is G-6- PD deficiency?






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






20. How many attacks are needed over how much time before panic disorder is diagnosed?






21. Which genus of dermatophytes is associated with the following sites of infection? - Hair and skin only






22. What test is used to screen for HIV?






23. What pneumoconiosis is associated with exposure to the following occupations or materials? - Aerospace industry - nuclear reactors






24. Which acid - fast rod is an obligate intracellular parasite?






25. What vitamin deficiency can result in high - output cardiac failure?






26. The DSM- IV- TR is scored on the basis of five axes of diagnosis. In What axis would you place x Personality and mental disorders?






27. What is the name of the B cell - rich area of the spleen?






28. What enzyme requires molybdenum as a cofactor?






29. 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






30. What is the term for the round intracytoplasmic eosinophilic inclusions containing ?- synuclein found in the dopaminergic neurons of the substantia nigra?






31. What enzyme is deficient in patients with PKU?






32. What two Beta- blockers decrease serum lipids?






33. What oral hypoglycemic agent should be used with caution in patients with CHF because it causes lactic acidosis?






34. Name the product or products of arachidonic acid: x Vasodilation and inhibition of platelet aggregation produced by vascular endothelium






35. What is the only class of diuretics to retain Cl - used in the short - term treatment of glaucoma and of acute mountain sickness?






36. Which two negative sense RNA viruses have neuraminidase enzymes?






37. What are the two MCC of acute epididymitis in males? - More than 35 years old






38. In what layer of the epidermis is melanin transferred from melanocytes to keratinocytes?






39. What IL down - regulates cell mediated immunity?






40. What is defined as a general estimate of the functional capacities of a human?






41. What is the MCC of the following meningitides? - In military recruits






42. What form of the Plasmodium species are injected into humans by mosquitoes?






43. What two enzymes are vitamin B12- dependent






44. In MHC class II molecules - what chain blocks access to the peptide - binding groove during transportation within the cell - ensuring that the MHC class II- peptide complex is transported to the surface?






45. What condition results in a strawberry gallbladder?






46. What sulcus divides the occipital lobe horizontally into a superior cuneus and inferior lingual gyrus?






47. Only men have...






48. Name the compartment of the lower extremity and the nerve based on its movements - Plantar flex the foot - flex the toes - and invert the foot






49. Name the most common type or cause - Erysipelas






50. What is the term for RBCs with smooth undulations on the surface of their membrane - commonly seen in uremia?







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