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 does the ductus venosus shunt blood away from? What is its remnant?






2. What secretes hCG?






3. What is the prochordal plate?






4. What is the defect in spina bifida occulta? is there any structural herniation? where on the spinal cord is it usually seen?






5. What is the Eisenmeger complex?






6. Where is the FGF gene produced? What is it responsible for - How does it do this?






7. what separates the atria from the ventricles?






8. The notochord is...






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






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






11. When does hcG get secreted? What does it do?up until when ?






12. What are the three regions of the brain (in order of cranial to caudal)?






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






14. When does hCG secretion take place? with what event?






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






16. From what region does the midbrain form from?






17. What are the two components of the placenta? From What do they form? which one secreted hcG?






18. What does the midgut form? hindgut?






19. From What embryonic layer is the bladder and urethra from?






20. From What embryonic layer is aorticopulmonary septum from ?






21. From What embryonic lare are the odontoblasts from?






22. What hormone is hcG structurally similar too?






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






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






25. failure to close of what fold results in sternal defects? omphalocele? gastrochisis? bladder extrosphy?






26. In anencephaly you see...






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






28. From where does the ureteric bud arise? What does it give rise to?






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






30. From What embryonic layer do the parafollicular cells of the thyroid arise?






31. From What embryonic layer does the parathyroid arise ?






32. What arises from the fourth aortic arch?






33. What is the physiological herniation that occurs at the 6th week - what herniates out of the umbilical ring? when it comes back in the 10th week - What does it rotate around?






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






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






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






37. What is holoprosencephaly? what eye disorder does it result in?






38. By when are the neuropores supposed to fuse?






39. What is germinal matrix hemorrhage associated with?






40. What happens in pancreas divisum? what results?






41. What is a zygote?






42. which genital embryology is default? From what duct? what duct degenerates without signal to stay?






43. what closes the ductus arteriousus?






44. From What embryonic layer do CNS neurons arise?






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






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






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






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






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






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