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 is holoprosencephaly? what eye disorder does it result in?






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






3. From what region of the brain does the aqueduct form?






4. What is the leading cause of birth defects in the US? what else is this perpetrator the leading cause of?






5. From What do the embryoblast and trophoblast form from? What does the embryoblast split into? the trophoblast?






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






7. What connects the thyroid to the tongue? when happens if it doesnt obliterate?






8. From What embryonic layer does the epidermis arise?






9. What causes tetralogy of Fallot?






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






11. The spinal cord is made from...






12. Which branchial apparatus develops into the thymus?






13. What does the RET gene encode? what neoplasias is it associated with?






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






15. What are the two types of posterior fossa malformations? which one results in a hindbrain crowding? and which results in an enlarged posterior fossa? which one is associated with syringomelia?






16. Only _______________________________ are associated with neural tube defects






17. What is the mcc of renovascular hypertension in children? What does this predispose to?






18. For what reason do hypospadias need to be fixed?






19. From What embryonic layer do chromaffin cells arise?






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






21. The spleen is ____________ in origin and supplied by a foregut artery






22. What secretes hCG?






23. What is the neural plate and From what does it form?






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






25. What arises from the fourth aortic arch?






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






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






28. What surrounds the umbilical cord?






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






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






31. What causes a large posterior fossa in a dandy walker malformation? What is found in this fossa?






32. What are the aspects of fetal alcohol syndrome?






33. From which myotomes are muscles of the tongue derived from?






34. From what region does the cerebral hemisphere form?






35. From where is amniotic fluid produced? other than electrolytes and carbs - what else does it contain?






36. What is perinauds syndrome?






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






38. How does annular pancreas present in children?






39. From what aortic arch does the stapedial artery arise? the hyoid?






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






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






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






43. What causes a vesicourachal diverticulum? What is it?






44. When does the blastocyst split into two disks? What is this disk called? What are the two germ layers called?






45. What does the vitelline duct connect? What is it also known as? when should it obliterate?






46. What embryological structure gives rise to the smooth part of the right atrium?






47. Which is more common - epispadias or hypospadias?






48. What is the female remnant of processus vaginalis? male remnant?






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






50. Cleft lip is a failure of formation of the...