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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 are the three surrogate criteria?

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2. Name the area of the cerebral cortex with the function described: x Skill - based memory - verbal recall - balance - refined voluntary movements






3. Which macrolide is used in the treatment of gastroparesis?






4. What diseases are associated with HLA- DR4






5. What is the most common chromosomal abnormality associated with CLL?






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






7. What deep cerebellar nuclei receive Purkinje cell projections in x The flocculonodular lobe?






8. Notching of the ribs - seen on chest radiograph in patients with postductal coarctation of the aorta - is due to collateralization of What arteries?






9. What ocular muscle x Abducts the eyeball and is involved in horizontal conjugate gaze?






10. What is the most common one? - Congenital heart defect in adults






11. Name the Plasmodium species based on the following information: Persistent hypnozoite liver stage with relapses; blood smear shows amoeboid trophozoites; 48- hour fever spike pattern; the most prevalent form worldwide






12. IgE- mediated mast cell release - C3a and C5a - and IL-1 all trigger the release of what vasoactive amine?






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






14. What do the following values indicate? - TD50






15. What cell surface modification of ependymal cells and respiratory epithelium has a 9 + 2 microtubular configuration and movement as its function?






16. Which carcinoma






17. What type of metal poisoning causes mental retardation - somnolence - convulsions - and encephalopathy?






18. Name the antimicrobial agent whose major side effect is listed - Cholestatic hepatitis






19. What CN is associated with the x First pharyngeal arch?






20. Is an irreversible collapse of a lung.






21. Name the most common type - Mental retardation






22. Name the product or products of arachidonic acid: x Vasodilation - bronchospasm - and increased vascular permeability






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






24. What type of chromatin is transcriptionally inactive?






25. What are the top three causes of infant mortality?






26. What are the four muscles of mastication?






27. Which protein prevents internal binding of self proteins within an MHC class II cell?






28. What primary acid - base disturbance is caused by an increase in alveolar ventilation (decreasing CO2 levels) resulting in the reaction shifting to the left and decreasing both H+ and HCO3- levels?






29. Name the macrophages by location: x Liver






30. The nucleus is the site of...






31. Can advance directives be oral?






32. What ascending sensory system carries joint position - vibratory and pressure sensation - and discriminative touch from the trunk and limbs?






33. What is the most common one? - Malignant tumor of the breast






34. Name the aphasia based on these characteristics: x Lesion in Brodmann area 22; impaired comprehension; incoherent rapid - fluent speech; verbal paraphrasias; trouble repeating statements

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35. What ocular muscle x Elevates and adducts the eyeball?






36. Name the associated chromosome - Tay- Sachs disease






37. What type of scheduled reinforcement states that after a desired response - the reinforcement is given x Varying in the number of responses?






38. What are the four most common causes of femoral head necrosis?






39. What is the most common one? - Bone disorder in the United States






40. People who believe that luck - chance - or the actions of others control their fate have an internal locus of control.






41. What type of mortality rate is defined as the number of deaths x From a specific cause per all deaths?






42. Name the type of mutation: x The deletion or addition of a base






43. Can an acute MI be diagnosed only by looking at an ECG?






44. What disorder is characterized by autoantibodies to IF?






45. Name the structure that enters or exits the following foramina: x Foramen rotundum






46. What is the most common one? - Malignant tumor in women






47. What area of the brain is responsible for emotion - feeding - mating - attention - and memory?






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






49. Name the most common type or cause - Childhood heart disease in the United States






50. Name the primary vesicle the following structures are derived from (proencephalon - mesencephalon - or rhombencephalon) - Hypothalamus