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






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






3. What teratogens can cause discolored teeth?






4. Does malformation occur during or after the embryonic period? is it due to an extrinsic or intrinsic disruption?






5. From What embryonic layer is the spleen from?






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






7. From What embryonic layer do the astrocytes arise?






8. What causes the increase in left atrial pressure to close the fossa ovale?






9. From what region does the cerebral hemisphere form?






10. What results in annular pancreas? How does it happen?






11. Weeks _______ erythropoiesis takes place in the liver






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






13. From What embryonic layer does a craniopharygioma arise?






14. What two cavities also form during the second week?






15. From What embryonic layer does the oligodendrocytes arise?






16. What causes urine discharge from the umbilicus?






17. From what region of the brain does the lateral ventricles and the 3rd ventricle form?






18. What weeks are considered the 'embryonic period'?






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






20. What is annular pancreas associated with in infants?






21. How do you differentiate a thyroglossal duct cyst from a persistent cervical sinus?






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






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






24. 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?






25. When does the notochord form? and When does the neural plate form?






26. what muscles are derived from branchial arch 6? CN?






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






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






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






30. How many components are there to the placenta? What are they called?






31. From What embryonic layer does the adenohypophysis arise?






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






33. which tracts are damaged first in syringomelia? What tract is preserved?






34. in hypospadias - on which side is the abnormal opening? What causes it?






35. What is DiGeorge syndrome and What does it result in?






36. What hormone is hcG structurally similar too?






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






38. When does the neural tube form and From what does it form?






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






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






41. What embryological structure gives rise to the trabeculated parts of the left and right ventricle?






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






43. what muscles are derived from branchial arch 1?






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






45. From what are the umbilical arteries and veins derived from?






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






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






48. From What embryonic layer is aorticopulmonary septum from ?






49. Which CN allows for taste and sensation in the posterior 1/3 of the tongue? how about the very back ?






50. Septum primum (patent foramen oval) caused by excessive resorption of...