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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 condition results from a deficiency in the enzyme hexosaminidase A?






2. What is the most common one? - Type of hernia seen in males more than 50 years old






3. Name the macrophages by location: x Liver






4. What AR disorder of copper metabolism can be characterized by Kayser - Fleischer rings - decreased ceruloplasmin levels - and increased urinary copper excretion and tissue copper levels?






5. In a ventricular pacemaker cell - what phase of the action potential is affected by ACh?






6. When a drug is administered orally and enters into portal circulation - it undergoes hepatic metabolism. What is the name of this effect?






7. What is the most common one? - Primary malignant tumor of the ovary






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






9. If the radius of a vessel is decreased by half - what happens to the resistance?






10. What is the term of the viral growth period when no viruses can be found intracellularly?






11. What is the term for gastric ulcers associated with severely burned or traumatic patients?






12. What are the four functions of SER?






13. Craniopharyngiomas are remnants of what?

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14. What malignant tumor of the trophoblast causes high levels of hCG and may occur after a hydatidiform mole - abortion - or normal pregnancy?






15. What part of the ANS (i.e. - PNS or CNS) controls the constriction of the pupil in response to light?






16. What enzyme catalyzes the reversible oxidative deamination of glutamate and produces the TCA cycle intermediate a - ketoglutarate?






17. What CNs arise from x The midbrain?






18. Describe the organism based on the following information: x Beta - hemolytic Streptococcus sensitive to bacitracin






19. What very aggressive lung cancer metastasizes early and is associated with smoking and paraneoplastic syndromes?






20. Is an anti - HAV IgG Ab associated with immunization or recent infection?






21. Which muscarinic receptor uses a decrease in adenyl cyclase as its second messenger?






22. Name the type of exudate - given the following examples - Meningococcal infection






23. What is the only dsRNA virus?






24. What causes a skeletal muscle contraction to terminate?






25. What organism causes Q fever?






26. More Ag is needed to produce a ____________ than a first immune response.






27. What diagnosis ensues from finding well - demarcated erythematous plaques with silvery scales on the knees - elbows - and scalp along with nail bed pitting and discoloration?






28. What Brodmann area is associated with x Frontal eye fields?






29. Name the most common type or cause - Viral pneumonia leading to death






30. Name the thalamic nucleus based on its input and output - Input from inferior colliculus; output to primary auditory cortex






31. What are the pharmacologic effects seen sexually with x Dopamine agonists?






32. What type of erythema do you see in x Rheumatic fever?






33. What is the term for failure of the testes to descend into the scrotum?






34. What primary acid - base disturbance is caused by a loss in fixed acid forcing the reaction to shift to the right - thereby increasing HCO3- levels?






35. What is the amount in liters and percent body weight for the following compartments? - ICF






36. What ovarian carcinoma is characterized by psammoma bodies?






37. What is the term for the pH range where the dissociation of H+ occurs?






38. What is the major hormone produced in the following areas of the adrenal cortex? - Zona glomerulosa






39. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Hematopoietic cells






40. With What is cherry red intoxication associated?






41. What is the term for flexion of the PIP and extension of the DIP joints seen in rheumatoid arthritis?






42. 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






43. In a negatively skewed curve is the mean greater than the mode?






44. Where does the parotid (Stensen's) duct enter the oral cavity?






45. What ocular muscle x Adducts the eyeball and is involved in horizontal conjugate gaze?






46. What is the site of action of the following? - Osmotic diuretics






47. What personality disorder affects 75% of the prison population?






48. What HIV structural gene produces GP120 and GP41?






49. What is the MCC of death in the United States?






50. What type of muscle contraction occurs when the muscle shortens and lifts the load placed on it?