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USMLE Step 1 Prep

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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 thyroid carcinoma is associated with radiation exposure - psammoma bodies - and Orphan Annie eye nuclei?






2. What type of correlation is defined as x One variable that diminishes in the presence of the other?






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






4. Regarding neuroleptics - What is the relationship between potency and anticholinergic side effects?






5. What hormone's release is strongly associated with stage 4 sleep?






6. What are the five hormones produced by Sertoli cells?






7.






8. The first sensory neuron is in the dorsal root ganglia. It carries ascending sensory information in the dorsal root of a spinal nerve - eventually synapsing with second sensory neuron. In the brainstem (DCML) and the spinal cord (spinothalamic) the s






9. What virus is associated with the endemic form of Burkitt lymphoma?






10. What are the three C's of measles?






11. After fertilization - what cells of the corpus luteum x Secrete progesterone?






12. What is released from the mitochondria to trigger apoptosis?






13. What enzyme found in a cholinergic synapse breaks down ACh? What are the byproducts?






14. Which a - blocking agent is used to treat refractory hypertension and baldness?






15. What complement factor deficiency leads to x Recurrent gonococcal infections?






16. What is the term to describe the inability to feel any pleasant emotions?






17. What is the amount in liters and percent body weight for the following compartments? - Vascular fluid






18. How does ventricular repolarization take place - base to apex or vice versa?






19. What enzyme converts androgens to estrogens?






20. What congenital small bowel outpouching is a remnant of the vitelline duct?






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






22. What is the most common one? - Female genital tract malignancy resulting in death






23. What is the most common lethal AR disorder affecting white Americans?






24. Name the MCC of death - In diabetic individuals






25. Name these narcissistic defense mechanisms: x Not allowing reality to penetrate because afraid of becoming aware of painful aspect of reality.






26. Which leukotrienes are associated with the late - phase inflammatory response?






27. What stage of male development is characterized by the following LH and testosterone levels? - Decreased testosterone production is accompanied by an increase in LH production.






28. Craniopharyngiomas are remnants of what?

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29. What disease is seen in children younger than 5 years of age and is characterized by X- linked recessive cardiac myopathies - calf pseudohypertrophy - lordosis - protuberant belly - an increase then a decrease in CPK - and death commonly in the secon






30. When is the first arrested stage of development in the female reproductive cycle?






31. What medication is a PGE1 analog that results in increased secretions of mucus and HCO3- in the GI tract?






32. What is the term for tissue - based basophils?






33. What oxygen - dependent killing enzyme requires hydrogen peroxide and halide (Cl -) to produce hypochlorous acid?






34. What is the primer for the synthesis of the second strand in production of cDNA from mRNA?

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35. What gene inhibits apoptosis by preventing the release of cytochrome c from mitochondria?






36. What muscle or muscles are innervated by the following nerves? - Upper subscapularis nerve






37. What cell of the duodenum secretes CCK?






38. What is the term for different classes and subclasses of the same gene products?






39. What is the tetrad of tetralogy of Fallot?






40. What pathology involves excessive fibrosis throughout the body via increased fibroblast activity - occurs in women more than men - and is most commonly seen in the third to the fifth decade?






41. What embryonic structure forms the adult female structures? - Ovary - follicles - rete ovarii






42. What is the major hormone produced in the following areas of the adrenal cortex? - Zona fasciculata






43. Anhedonia - lack of motivation - feelings of worthlessness - decreased sex drive - insomnia - and recurrent thoughts for at least 2 weeks - representing a change from previous level of function - describes what disorder?






44. How many ATPs are generated per acetyl coenzyme A (CoA)?






45. Based on operant conditioning - What type of reinforcement is described when x Removing a stimulus stops a behavior?






46. What complement factor deficiency leads to x Hereditary angioedema?






47. What is the only CN nucleus found in the cervical spinal cord?






48. What subtype of schizophrenia is characterized by x Delusions of persecution and/or grandeur - auditory hallucinations - late onset - and the best prognosis?






49. What bactericidal agents are resistant to Beta- lactamases and are used to treat in - hospital life - threatening infections?






50. 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






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