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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 is the most common one? - Benign GI tumor






2. What AR disease involves a defect in AA 508 on chromosome 7 - causing a defect in Cl - transportation that leads to recurrent pulmonary infections and an increase in viscid mucoid secretions along with pancreatic insufficiencies?






3. Name the area of the cerebral cortex with the function described: x Motivation - memory - emotions - violent behaviors - sociosexual behaviors - conditioned responses






4. Does physiologic splitting of the first heart sound occur during inspiration or expiration? Why?






5. What phobia is described as the fear of open spaces?






6. Prevents restriction endonuclease from cutting its own chromosomes.






7. What IL is essential for lymphoid cell development?






8. Name the most common one - Chromosomal disorder






9. What is the function of the cerebellum?






10. What CN carries preganglionic parasympathetic fibers that innervate the viscera of the neck - thorax - foregut - and midgut?






11. Name the macrophage based on its location: x Connective tissue macrophages






12. Name the MCC of death - In diabetic individuals






13. What pancreatic islet cell tumor is associated with hypoglycemia - sweating - hunger - confusion - and increased C- peptide levels?






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






15. Name the antimicrobial agent whose major side effect is listed - Auditory toxicity






16. With what virus are Downey type II cells associated?






17. What limb of the internal capsule is not supplied by the middle cerebral artery?






18. What Ig is the major protective factor in colostrum?






19. What ethnic group has the highest adolescent suicide rate?






20. What is the name of the major chemotactic agent released from x The blood serum? (Hint: it is a complement factor.)






21. In what layer of the epidermis is melanin transferred from melanocytes to keratinocytes?






22. What attaches the cusps of the valves to the papillary muscles in the heart?






23. What pattern of genetic transmission is characterized by no transmission from M - maternal inheritance - and the potential for the disease to affect both sons and daughters of affected F?






24. What antiepileptic agent has SIADH as a side effect?






25. How far below ideal body weight are patients with anorexia nervosa?






26. What germ cell tumor is seen in the 15- to 35-year - old age group - peaks when the person is 35 years of age - and is a bulky mass that spreads via the lymphatic system?






27. Name the GLUT transporter based on the following: x Found in skeletal muscle and adipose tissues






28. Which prophylactic asthmatic agent is an antagonist of LTD4?






29. What are the three sites where CSF can leave the ventricles and enter the subarachnoid space? (Name the lateral and the medial foramina.)






30. ADH is secreted in response to What two stimuli?






31. What potentially fatal disease occurs in children who are given aspirin during a viral illness?






32. What fungus is urease positive?






33. What pathophysiologic disorder is characterized by the following changes in cortisol and ACTH? - Cortisol decreased - ACTH increased

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34. What paraphilia is defined as x Deriving sexual pleasure from watching others having sex - grooming - or undressing?






35. Which overdose carries a higher mortality rate - that of benzodiazepines or barbiturates?






36. What is the reservoir for the togavirus?






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






38. Where is the action potential generated on a neuron?






39. Name the associated chromosomal translocation - Ewing sarcoma






40. What type of hernia is described as passing through the deep lateral ring of the inguinal canal?

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41. What is the DOC for Beta- blocker - induced bronchospasms?






42. Name the type of graft described by these transplants: x From one person to the next (the same species)






43. Name the following descriptions associated with bacterial endocarditis: x Retinal emboli






44. Name the antidote - Copper






45. What wave is the cause of the following venous pulse deflections? - The contraction of the right atrium






46. What component of the inner ear x Contains endolymph and gravity receptors monitoring linear acceleration and deceleration of the head - noting changes in head position?






47. Name the nephritic disease based on the immunofluorescent staining - Mesangial deposits of IgA and C3






48. What is the lecithin:sphingomyelin ratio in respiratory distress syndrome of newborns?






49. What is the biochemical trigger for REM sleep?






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







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