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 disease arises from the adrenal medulla - displaces and crosses the midline - metastasizes early - is the most common solid tumor - and is seen in the 2- to 4-year - old age group?






2. Is the carotid sinus sensitive to pressure or oxygen?


3. Where is most of the body's Ca2+ stored?






4. From what pharyngeal pouch is the following structure derived? - Palatine tonsil






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






6. Name the most common type or cause - Erysipelas






7. The clearance of what substance is the gold standard of renal plasma flow?






8. Name the cluster C personality disorder: x Sensitive to criticism - shy - anxious; socially isolated but yearns to be in the crowd






9. What hormone level peaks 1 day before the surge of LH and FSH in the female cycle?






10. Name the compartment of the lower extremity and the nerve based on its movements - Dorsiflex the foot - extend the toes - and invert the foot






11. What nerve supplies general sensation to the anterior two - thirds of the tongue?






12. What is the most common precipitin test used in clinical medicine?






13. Which macrolide is given as 1200 mg/week for the prophylaxis of Mycobacterium avium intracellulare complex?






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






15. What three major cell lines participate in the acquired immune system?






16. What thyroid abnormality has the following? - TRH decreased - TSH decreased - T4 decreased






17. Which phase of clinical drug testing includes postmarket reporting of adverse reactions?






18. What drug blocks intragranular uptake of NE?






19. What is the term for a unit of DNA that encodes a particular protein or RNA molecule?






20. What is the name of demyelination of the corticospinal tract and the dorsal column in the spinal cord due most commonly to a vitamin B12 deficiency?






21. What substance is used to test platelets' response in patients with von Willebrand disease?






22. What is the MCC of the following meningitides? - In patients who have AIDS or are immunocompromised






23. What mineral deficiency involves blood vessel fragility?






24. In regards to solute concentration - how does water flow?






25. What is the term for involuntary constriction of the outer third of the vagina to prevent penile penetration?






26. What two vitamins are inactivated when they come in contact with acetaldehyde?






27. What hormone - produced by Sertoli cells - if absent would result in the formation of internal female structures?






28. What vitamin is a component of the coenzyme thiamine pyrophosphate (TPP)?






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






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






31. What is the only DNA virus that has the reverse transcriptase enzyme?






32. In What type of circuit is the total resistance always less than that of the individual resistors?






33. Name these cluster A personality disorders: x Odd - strange; has magical thinking; socially isolated - paranoid - lacks close friends; has incongruous affect






34. What three organs are responsible for peripheral conversion of T4 to T3?


35. What hypothalamic nucleus is responsible for the production of ADH?






36. Which hepatitis virus is in the Picornaviridae family?






37. What glycoprotein allows platelets to adhere to von Willebrand factor?






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






39. What sex cell tumor causes precocious puberty - masculinization - gynecomastia in adults - and crystalloids of Reinke?






40. What is the DOC for the following protozoal infections? - Giardiasis






41. What disorder is associated with decreased platelet count - prolonged PT and PTT - decreased fibrinogen - and increased fibrin split products (D- dimers)?






42. Name the most common type or cause - Acute renal failure in the United States






43. What subset of T cells recognizes the MHC class I Ags?






44. What respiratory center in the caudal pons is the center for rhythm promoting prolonged inspirations?






45. What type of Hgb is increased in patients with sickle cell anemia who take hydroxyurea?






46. Name the Hgb - O2 binding site based on the following information: x Greatest affinity of the three remaining sites for attachment; requires PO2 levels of 26 mm Hg to remain attached






47. What nerve is associated with the following functions? - Innervation of the flexor carpi ulnaris - flexor digiti profundus (pinky and ring fingers) - and the intrinsic muscles of the hand






48. What disease is a cavitation of the spinal cord causing bilateral loss of pain and temperature at the level of the lesion?






49. A 30-year - old woman goes to your office with bilateral multiple breast nodules that vary with menstruation and have cyclical pain and engorgement. What is your diagnosis?






50. What is the term for the negative resting membrane potential moving toward threshold?