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






2. Does PT or PTT test the extrinsic coagulation pathway?






3. Senile plaques






4. What cell type of the body or fundus of the stomach secretes pepsinogen?






5. What part of the heart forms x Superior border?






6. What happens to dopamine levels when we awaken?






7. Name the type of necrosis - Soft - friable - cottage - cheese appearing; characteristically seen in TB






8. What regulates the rate of ketone body formation?






9. If a peripheral blood smear shows schistocytes - reticulocytes - and thrombocytopenia - is it more commonly seen in patients with ITP or TTP?






10. What muscle of the middle ear is innervated by the mandibular division of CN V?






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






12. What is the term for an inhibited female orgasm?






13. Is the hydroxyl (- OH) end of DNA and RNA at the 3' or the 5' end?

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14. What CN is associated with the x Fifth pharyngeal arch?






15. What enzyme catalyzes the rate - limiting step in purine synthesis?






16. Match the chromosome and haploid number with the stage of sperm development - spermatid - spermatocyte (primary or secondary) - spermatogonia (type A or B): x 23/1n






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






18. Damage to what nerve will give you winged scapula?






19. What TCAD causes sudden cardiac death in children?






20. What is the most common genetic cause of mental retardation?






21. Name the structure that enters or exits the following foramina: x Foramen magnum






22. Are the following conditions associated with a negative or positive nitrogen balance? - Pregnancy






23. What pancreatic islet cell tumor is associated with watery diarrhea - hypokalemia - and achlorhydria?






24. What is the term for the degree to which a test measures what it is intended to measure?






25. What test uses p24 protein when diagnosing HIV?






26. Name the four ventral mesentery derivatives.






27. Why is hypothyroidism associated with night blindness?






28. Why is the clearance of creatinine always slightly greater than the clearance of inulin and GFR?






29. At what point does the axillary artery become the brachial artery?






30. What three drugs are associated with SLE- like syndrome in slow acetylators?






31. Describe the loss for each of the following in a hemisection of the spinal cord. (Brown - S






32. What obligate extracellular fungus is silver stain - positive and is associated with pneumonia in patients with AIDS?






33. What water - soluble - vitamin deficiency is associated with neural tube defects in the fetus?






34. What childhood pathology involves anterior bowing of the tibia - epiphyseal enlargements - and costochondral widening - with the endochondral bones being affected?






35. What is the term for panhypopituitarism secondary to ischemic necrosis and hypotension postpartum?






36. What is the most common form of dementia?

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37. Neurofibrillary tangles






38. Name the macrophage based on its location: x Brain macrophages






39. Are the quadrate and caudate lobes of the liver functionally part of the left or right lobe?






40. What is the most common one? - Thyroid cancer






41. Depolarization of the postsynaptic membrane...






42. What ganglion supplies the postganglionic parasympathetic fibers to the ciliary muscles of the eye?






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






44. What virus is associated with body cavity large B- cell lymphomas?






45. How many ATPs per glucose are generated in glycolysis?






46. How many ATPs are produced from cytoplasmic NADH oxidation using the malate shuttle?






47. What is the most common primary diagnosis resulting in an office visit for males? For females?






48. What are the adult remnants of the following structures? - Right and left umbilical arteries






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






50. All of the hormones in the hypothalamus and anterior pituitary gland are...