Test your basic knowledge |

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 artery travels with the following veins? - Middle cardiac vein






2. What is the most important determinant of drug potency?






3. What protein is required by prokaryotic RNA polymerases to initiate transcription at the promoter region of DNA?






4. What is the only way to increase the Vmax of a reaction?






5. What is the DOC for esophageal candidiasis?






6. Protein production - bile secretion - detoxification - conjugation - and lipid storage.






7. Are hemorrhagic cerebral infarcts more commonly associated with embolic or thrombotic occlusions?






8. What is the drug of choice for penicillin - resistant gonococcal infections?






9. What part of the heart forms x Anterior wall?






10. What is the only vein in the body with a high O2 content?






11. What is the most common form of elderly abuse?






12. What malabsorption syndrome produces abdominal distention - bloating - flatulence - diarrhea - steatorrhea - and weight loss shortly after eating bread products?






13. At What age does a child develop x Exogenous smile?






14. What parasympathetic nucleus is found on the floor of the fourth ventricle and supplies preganglionic fibers innervating the terminal ganglias of the thorax - foregut - and midgut?






15. What is the period between falling asleep and REM sleep called?






16. After fertilization - what cells of the corpus luteum x Secrete progesterone?






17. What antiviral agents inhibit neuraminidases of influenza A and B?






18. What scale separates things into groups without defining the relationship between them?






19. What is the name of depression and mania alternating within a 48- to 72- hour period?






20. Which antispasmodic blocks the release of Ca 2+from the SR and is used in the treatment of malignant hyperthermia?






21. What embryonic structure forms the following adult structures? - External genitalia






22. Early menses - late menopause - history of breast cancer - obesity - and multiparity.






23. What hormone constricts afferent and efferent arterioles (efferent more so) in an effort to preserve glomerular capillary pressure as the renal blood flow decreases?






24. All AAs have titration plateaus At what pH values?






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






26. With a decrease in arterial diastolic pressure - what happens to x Stroke volume?






27. What is the term for the external urethra opening onto the dorsal surface of the penis?






28. What is the degree to which two measures are related? Does it imply causation?






29. What structure or structures cross the diaphragm at x T8 level?






30. A 25-year - old black woman presents with nonproductive cough - shortness of breath - fatigue - and malaise; she has bilateral hilar lymphadenopathy on chest radiography and elevated ACE levels. What do you diagnose?






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






32. 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






33. What lymphoma is associated with bleeding and cryoglobulin precipitation at low temperatures - headache and confusion due to hyperviscosity - IgM M- protein spike on serum electrophoresis - and Russell bodies?






34. Name the B- cell CD marker: x Required for class switching signals from T cells






35. What is the term for the load a muscle is trying to move during stimulation?






36. What IL do T cells secrete to induce T- and B- cell division?






37. What type of hypersensitivity is an Ab - mediated response against our own cells - receptors - or membranes via IgG or IgM?






38. What two ligaments of the uterus are remnants of the gubernaculum?






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






40. Name the associated chromosome - Cri - du - chat






41. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - CNS neurons






42. Name the type of hypersensitivity reaction based on the following properties - IgE- mediated release of chemical mediators from basophils and mast cells; need prior exposure to Ag in the past; eosinophils amplify and continue reaction; can be system






43. What is the best measure of total body vitamin D if you suspect a deficiency?






44. What sensory system is affected in the late spinal cord manifestation of syphilis?






45. What AR disorder is seen by age 1 to 2 with recurrent sinopulmonary infections - uncoordinated muscle movements - and dilation of the blood vessels?






46. What is the second leading cause of death in the United States?






47. What is the most common one? - Type of melanoma






48. What is the term for the amount of blood in the ventricle after maximal contraction?






49. When does the primitive gut herniate out of the embryo? When does it go back into the embryo?






50. What hypothalamic hormone is synthesized in the preoptic nucleus?