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USMLE Embryo

Subjects : health-sciences, usmle
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. Name two endocardial cushion defects.






2. What is congenital pharyngocutaneous fistula? and How does it occur?






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






4. What does the foramen ovale shunt blood from - to where? What is its remnant?






5. What is the primitive streak? From what layer does it form?






6. From What embryonic layer does a craniopharygioma arise?






7. From What embryonic layer do the salivary - sweat and mammary glands arise?






8. What does DHT turn the genital tubercle into? estrogen?






9. What is contained in the umbilical cord?






10. What arises from the fourth aortic arch?






11. From What embryonic layer is the spleen from?






12. Which part of pancreas contribute to body? tail? isthmus? accessory pancreatic duct?






13. What does the maternal component of the placenta provide? Where is it derived from?






14. What teratogens can cause CN VIII toxicity in the fetus?






15. Which part of the chorionic villi can make cells?






16. What axis does the basal plate form? what neural system does it become?






17. What gene is produced in the zone of polarizing activity?






18. What causes tetralogy of Fallot?






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






20. From What embryonic layer does bone of the skulls arise?






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






22. What embryological structure gives rise to the trabeculated part of the left and right atrium?






23. What teratogen can cause an absence of digits amongst other things in the fetus? give an example.






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






25. What artery is derived branchial (aortic) arch 6?






26. What is the effect of teratogens after week 8?






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






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






29. Cleft palate is a failure of fusion of the lateral palatine processes - the nasal septum and or the ________?






30. What type of blood do umbilical arteries carry? From where to where?






31. The notochord is...






32. Where is sonic hedgehog gene produced? What axis is it responsible in patterning?






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






34. What causes meconium discharge from the umbilicus?






35. From What embryonic layer do chromaffin cells arise?






36. From What embryonic layer does the epidermis arise?






37. What day is the amnion formed?






38. Where is the mothers blood located in the placenta?






39. What is the allantois become? What is this duct connected to ( on both ends)?






40. What is associated with only one umbilical artery?






41. Where is erythropoeisis in the weeks 3-8 of fetal development? Where does it occur after that? until when?






42. Which cranial nerve innervates the motor function of the tongue?






43. What part of the gut rotates around the SMA? and At what point?






44. what muscles are derived from branchial arch 4? CN?






45. What congenital abnormality forms a 'double bubble' on xray?






46. At what week does the fetus look like a baby?






47. What type of radiation is teratogenic ?






48. What artery is derived branchial (aortic) arch 1?






49. What axis does the alar plate form? what neural system does it become?






50. From What embryonic layer are the schwann cells from ?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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