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 AD syndrome involves 1000 or more edematous polyps - most commonly affects the colorectal area - and is associated with chromosome 5q21?






2. What is the major Ab of the primary immune response?






3. At What age does a child develop x Preferential smile?

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4. Name the primary vesicle the following structures are derived from (proencephalon - mesencephalon - or rhombencephalon) - Third ventricle






5. What breast malignancy has tumor cells with a halo surrounding the nucleus and is an ulceration of the nipple and areola with crusting - fissuring - and oozing?






6. What is the only NSAID that causes irreversible inhibition of the cyclooxygenase pathway?






7. Name the stages of sleep with these EEG patterns: x Alpha waves






8. Name the type of graft described by these transplants: x From one species to another






9. What operant conditioning therapy or modification is described as x Removing a reinforcement (without the patient knowing) gradually over time to stop a condition?






10. What abdominal muscle runs in a posteroinferior direction - splits to contribute to the rectus sheath - contributes to the formation of the conjoint tendon - and in men gives rise to the middle spermatic fascia and the cremasteric muscle of the sperm






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






12. What is the term for a RBC that has a peripheral rim of Hgb with a dark central Hgb - containing area?






13. What is the term for hyphae with constrictions at each septum that are commonly seen in Candida albicans?






14. What testicular tumor of infancy is characterized by elevated - fetoprotein levels and Schiller - Duval bodies?






15. What endogenous pigment found in the substantia nigra and melanocytes is formed by the oxidation of tyrosine to dihydroxyphenylalanine?






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






17. What are the four ways to down - regulate the immune system?






18. What results when the palatine prominences fail to fuse with the other side?






19. What is the size of a positive PPD test for the following? (Reactive) x IV drug abuser






20. What are the long microvilli in the inner ear and male reproductive tract called?






21. What potent platelet aggregator and vasoconstrictor is synthesized by platelets?






22. If a lesion occurs before the onset of puberty and arrests sexual development - What area of the hypothalamus is affected?






23. 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






24. What is the DOC for the treatment of the late phase response in an asthmatic attack?






25. What is the term for flattened nose - low - set ears - and recessed chin seen in patients with bilateral renal agenesis?






26. Does the oncotic pressure of plasma promote filtration or reabsorption?






27. What is the major muscle used in the relaxed state of expiration?






28. What enzyme is deficient in acute intermittent porphyria?






29. Influenza - Vibrio cholera - hepatitis A - rabies - and adenovirus.






30. What connects the third and the fourth ventricles?






31. The ophthalmic artery is a branch of what vessel?






32. What phase of the female cycle occurs during days 1 to 15?






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






34. What form of bias occurs when the experimenter's expectation inadvertently is expressed to the subjects - producing the desired effects? How can it be eliminated?






35. What type of cerebral bleed is due to a rupture of a berry aneurysm in the circle of Willis?






36. Name the cerebral vessel associated with the following vascular pathologies - Subdural hemorrhage






37. What is the most common one? - Benign GI tumor






38. What is the leading cause of school dropout?






39. What muscle of the middle ear is innervated by CN VII?






40. RBCs anaerobically use glucose in both the __________ states.






41. What pyrimidine base is found x Only in RNA?






42. What Brodmann area is associated with x Premotor cortex?






43. Name the most common cause - A cold in the spring and fall






44. What bronchogenic carcinoma is associated with an elevated level of Ca2+ - involves keratin pearls - occurs in men more than women - is associated with smoking - occurs in the major bronchi - and is seen in the central areas of the lung?






45. What happens to O2 affinity with a decrease in p50?






46. What are the two MCC of acute epididymitis in males? - More than 35 years old






47. What syndrome has multiple adenomatous colonic polyps and CNS gliomas?






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






49. What component of the ETC is inhibited by the following? - Atractyloside






50. What liver enzyme - for triglyceride synthesis - converts glycerol to glycerol -3- phosphate?