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USMLE Embryo

Subjects : health-sciences, usmle
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 is the most common subtype of tracheoesophageal fistula? name some symptoms (hint: O2 levels - feeding - stomach on CXR - - amnios? - NG tube? - respiratory infection? )






2. Most myelomeningoceles present in the _______ region






3. What are two common findings in pyloric stenosis?






4. From What embryonic layer does the gut tube epithelium arise?






5. During what week do the limbs begin to form?






6. What do the 2nd through 4th clefts of the branchial apparatus correlate to?






7. How many umbilical arteries are there? How many umbilical veins?






8. _____________is common in 1st born males






9. What is Treacher Collins syndrome? What is the result?






10. what closes the interventricular foramen?






11. From What embryonic layer does the lens of the eye arise?






12. From where did a branchial cleft cyst arise if it found?






13. By what week is the neural tube supposed to be closed? when did it start forming?






14. The notochord is...






15. what week do the genitalia start to have male/female characteristics? What trimester is that?






16. What is annular pancreas associated with in infants?






17. What teratogens can cause discolored teeth?






18. What day is the amnion formed?






19. From what region does the cerebral hemisphere form?






20. What embryological structure gives rise to the coronary sinus?






21. What is the mnueomonic for the mesodermal defects? What does it stand for?






22. What causes the obstruction in pyloric stenosis? treatment?






23. Name two endocardial cushion defects.






24. What role does the placenta have?






25. In both meningocele and myelomeningocele the dura...






26. What is the female remnant of the gubernaculum? male remnant?






27. From What embryonic layer does the parathyroid arise ?






28. From what branchial derivative do the parafollicular cells arise?






29. How do adults with annular pancreas present? and At What age?






30. what chemo drugs can cause neural tube defects in the fetus?






31. What is omphalocele? In What trisomies is it seen?






32. From What embryonic layer does the epithelial linings of the oral cavity arise?






33. From what region does the midbrain form from?






34. What causes a patent foramen ovale?






35. What separated myometrium of the uterus from the blastocyst?






36. What trisomy is associated with holoprosencephaly? What teratogen?






37. What type of blood do umbilical veins carry? From where to where?






38. What are the clinical symptoms that present with syringomelia?






39. What embryological structures give rise to the SVC?






40. From what region of the brain does the fourth ventricle form?






41. What does DHT turn the urogenital folds into? estrogen?






42. Which CN accounts for the anterior 2/3 of the tongues sensation and pain? how about taste?






43. What teratogen can cause IUGR and ADHD in a fetus? what else can this teratogen cause?






44. From What embryonic layer does the olfactory epithelium arise?






45. What causes persistent Truncus Arteriosus? What does it result in?






46. What are markers for neural tube defects in the amniotic cavity? CSF?






47. What embryologic structure gives rise to the smooth outflow tracts of the ventricles? what else does it give rise to?






48. Weeks _______ erythropoiesis takes place in the liver






49. From where is the allantois formed? During what week?






50. which teratogen can cause Ebsteins anomaly in the fetus?






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