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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 name of the postganglionic parasympathetic ganglion that innervates x The submandibular and sublingual glands?






2. What does failure of PaO2 to increase with supplemental O2 indicate?






3. What water - associated organism is a weakly stained gram - negative rod that requires cysteine and iron for growth?






4. How many strains of Pneumococcus capsular polysaccharides are present in the vaccine?






5. Which antihistamine is one of the DOCs for treatment of vertigo?






6. What type of hypersensitivity is a T cell - mediated response to Ags that are not activated by Ab or complement?






7. What percentage of CO2 is carried in the plasma as HCO3- ?






8. What connects the lateral ventricles to the third ventricle?






9. What muscles insert in or on the intertubercular groove of the humerus?

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10. What estrogen receptor agonist in bone is used in the treatment and prevention of osteoporosis?






11. What happens to capillary oncotic pressure with dehydration?






12. What aspects of sleep are affected during benzodiazepine use?






13. Which trematode is associated with bladder carcinoma in Egypt and Africa?






14. What three substrates control the enzyme PEPCK for the conversion of oxaloacetate (OAA) to pyruvate in the cytoplasm?






15. What three chemical agents are associated with angiosarcomas of the liver?






16. If you report a suspected case of child abuse and are wrong - are you protected from legal liability?






17. What is the MCC of the following meningitides? - In adults






18. What artery travels with the following veins? - Great cardiac vein






19. What disorder is characterized by a depressed mood and a loss of interest or pleasure for more than 2 years?






20. What is the name for the following RBC indices? - Average Hgb concentration/given volume of packed RBCs






21. Name the most common type or cause - Diarrhea in children






22. What segments of the lumbosacral plexus form the following nerves? - Common peroneal nerve






23. Increased urinary excretion of what substance is used to detect excess bone demineralization?






24. What enzyme catalyzes the rate - limiting step in fatty acid oxidation?






25. What disorder is due to a 5-- reductase deficiency - resulting in testicular tissue and stunted male external genitalia?






26. What linkage of complex CHOs does pancreatic amylase hydrolyze? What three complexes are formed?






27. Name the most common type or cause - Urethritis in a young - newly sexually active individual






28. Name the antimicrobial agent whose major side effect is listed - CN VIII damage (vestibulotoxic)






29. What MHC class functions as a target for elimination of abnormal host cells?






30. What is the name of violent projectile movements of a limb resulting from a lesion in the subthalamic nuclei of the basal ganglia?






31. In What three areas of the body are sympathetics the predominant tone?






32. Does ELISA or Western blot confirm whether a patient is HIV- positive?






33. What is the most widely used class of antidepressants?






34. What syndrome is associated with the following brainstem lesions? - Posterior cerebral artery occlusion resulting in a contralateral corticospinal tract signs - contralateral corticobulbar signs to the lower face - and ipsilateral CN III palsy

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35. What Ig is the major protective factor in colostrum?






36. What nerve is associated with the following functions? - Flex the shoulder - flex the elbow - and supinate the elbow






37. What do UMNs innervate?






38. What is the name of the process that ensures that each B cell produces only one heavy- chain variable domain and one light chain?






39. What enzyme is deficient in patients with CGD?






40. What area of the limbic system is responsible for attaching emotional significance to a stimulus?






41. What is the name of the pathway that produces leukotrienes?






42. Which nicotinic receptor antagonist causes hypotension and is associated with malignant hyperthermia?






43. What muscle keeps the stapes taut against the oval window?






44. What does Candida albicans do that distinguishes it from other fungi?






45. Do the following structures pick up stain from hematoxylin or eosin? - Calcium






46. What factors are needed for elongation in eukaryotes?






47. What benign bone tumor is associated with Gardner syndrome?






48. What is the most common one? - Cancer of the vulva






49. Name the area of the cerebral cortex affected by the description of the effects - symptoms - and results of the lesion - Withdrawn - fearful - explosive moods - violent outbursts - and loss of inhibitions






50. What complement factor or factors are associated with x Anaphylaxis?