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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. In a topographical arrangement of the cerebellar homunculus map - What area or lobe x Is involved in motor planning?






2. What antipsychotic movement disorder can occur at any time and is characterized by a subjective sense of discomfort that brings on restlessness - pacing - sitting down - and getting up?






3. What structure of the knee is described thus? - C- shaped shock absorber; aids in attachment of the tibia to the femur via the medial collateral ligament






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






5. What is the only neuroglial cell of mesodermal origin?






6. What immunologic syndrome is due to a pharyngeal pouch 3 and 4 failure?

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7. What three AAs must patients with maple syrup urine disease not eat?






8. Where is the lesion that produces these symptoms when a patient is asked to look to the left? - Left eye can't look to the left






9. In which form of emphysema - panacinar or centriacinar - is the effect worse in the apical segments of the upper lobes?






10. A marfanoid patient presents with tearing retrosternal chest pain radiating to her back. What is your first diagnosis?






11. What is the function of the arachnoid granulations?






12. Methylating uracil produces what pyrimidine base?






13. What is the leading cause of preventable premature death and illness in the United States?






14. Name the MCC of death - In diabetic individuals






15. When does the primitive gut herniate out of the embryo? When does it go back into the embryo?






16. How long is the transit time through the large intestine?






17. What enzyme is blocked by hydroxyurea?






18. Do the following structures pick up stain from hematoxylin or eosin? - Cytoplasm






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






20. What small gram - positive - non - spore - forming rod is a facultative intracellular parasite that grows in the cold and is associated with unpasteurized milk products?






21. What form of AA is found only in collagen?






22. With What two pathologies is a honeycomb lung associated?






23. What enzyme is deficient in alkaptonuria?






24. What enzyme is inhibited by sulfonamides?






25. What staphylococcal species is positive for Beta - hemolysis and coagulase?






26. What is your diagnosis of a young - thin asymptomatic female with a midsystolic click on cardiac auscultation?






27. What cells lining the ventricles have cilia on their luminal surface to move CSF?






28. Name the primary vesicle the following structures are derived from (proencephalon - mesencephalon - or rhombencephalon) - Cerebral aqueduct






29. What term is defined as a patient unconsciously placing his or her thoughts and feelings on the physician in a caregiver or parent role?






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






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






32. What type of test asks a patient to draw a scene - attempting to find out the individual's unconscious perceptions in his or her life?






33. What happens to NE levels in x Bipolar disorder?






34. Name the compartment of the mediastinum associated with the following thoracic structures: Descending aorta






35. What component of the ETC is inhibited by the following? - Azide






36. What is the term for severe and protracted vomiting resulting in linear lacerations at the gastroesophageal junction?






37. What protein prevents ssDNA from reannealing during DNA replication?






38. What type of spore is asexual and formed of hyphae?






39. What is the period between falling asleep and REM sleep called?






40. Name the bony articulations of the following sites. Be specific - Shoulder






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






42. Name the thalamic nucleus based on its input and output - Input from the optic tract; output projects to the primary visual cortex of the occipital lobe






43. What region of the pharynx does the eustachian tube enter?






44. What cytoplasmic organelle carries the enzymes for elongation and desaturation of fatty acyl CoA?






45. What is the term for the load on a muscle in the relaxed state?






46. What is the function of white rami communicantes?






47. What organ functions to keep blood glucose levels normal through both well - fed and fasting states and produces ketones in response to increased fatty acid oxidation?






48. What enzyme is needed to activate the following reactions? - Procarboxypeptidase to carboxypeptidase






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






50. What are the four ways to increase TPR?







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