Test your basic knowledge |

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. What are the two walls of the prosencephalon and What do they become?






2. What produces testis determining factor? what cells are produced from this? and What do they secrete? does this result in?






3. Cleft palate is a failure of formation of the...






4. What do the groove/clefts of the branchial apparatus correlate to?






5. From where does the permanent kidney for? is it most caudal or most cranial?






6. What does the midgut form? hindgut?






7. What hormone is hcG structurally similar too?






8. From which germlayer does the thyroid develop?? From what structure exactly?






9. From What embryonic layer does the thyroid follicular cells arise?






10. What happens in pancreas divisum? what results?






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






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






13. Where is the decidua basalis derived from?






14. From What embryonic layer do the ependymal cells arise?






15. What teratogen can cause vaginal clear cell adenocarcinoma in the fetus?






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






17. What components do the neural crest cells of the branchial arches give rise to?






18. What is perinauds syndrome?






19. From what arches are the neural crest cells that form the aorticpulmonary septum derived?






20. What axis is Wnt 7 responsible for developing?






21. Which branchial apparatus makes the external auditory meatus?






22. What teratogens can cause renal damage in the fetus?






23. What is the difference between agenesis and aplasia?






24. What is the Eisenmeger complex?






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






26. what separates the atria from the ventricles?






27. From What embryonic layer does the skin dermis arise?






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






29. What type of - amnios does bilateral agenesis form? What three symptoms does this cause?






30. During what week does the heart begin to beat?






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






32. What teratogens can cause discolored teeth?






33. What day is the chorion formed?






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






35. Gastroschisis is extrusion of abdominal contents out of abdominal folds ___________ by peritoneum






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






37. During what periods do the damages that cerebral palsy causes occur?






38. From What embryonic layer does the adenohypophysis arise?






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






40. What causes tetralogy of Fallot?






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






42. What teratogen can cause inhibition of intestinal folate absorption and thus neural tube defects?






43. what drug is used to help close a PDA? what else does this drug treat?






44. Which branchial apparatus develops into the inferior parathyroids?






45. What part of the vagina does the mullerian duct form? Where does the rest come from?






46. What are the neural crest cells and where do they come form? where do they go?






47. What embryonic structure gives rise to the ascending aorta? what else does it give rise to?






48. Where is the most common ectopic thyroid tissue?






49. What does the mullerian duct develop into? wollffian?






50. From What embryonic layer are the dorsal root and celiac ganglion from?