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






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






3. From What embryonic layer does the adenohypophysis arise?






4. What is an arnold chiari II malformation? through what hole does it herniate?






5. Where is the apical ectodermal ridge?






6. From What embryonic layer is aorticopulmonary septum from ?






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






8. ______________ is associated with ventral curvature of the penis






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






10. Which parts of the pancreas contribute to the head - uncinate process and main pancreatic duct?






11. What components do the mesoderm of the branchial arches give rise to?






12. What are the aspects of fetal alcohol syndrome?






13. From What embryonic layer do the astrocytes arise?






14. what structures are the derivatives of the neural crest cells in branchial arches?






15. What role does the placenta have?






16. What causes meconium discharge from the umbilicus?






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






18. Pyloric stenosis is characterized by _____________ of muscularis externis in the sphincter






19. What artery is derived branchial (aortic) arch 2?






20. From What embryonic layer does the olfactory epithelium arise?






21. Which branchial apparatus develops into the thymus?






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






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






24. From What embryonic lare are the odontoblasts from?






25. From what aortic arch does the common carotid artery arise? what else arises from this arch?






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






27. What is duodenal atresia usually due to? What trisomy is it most often seen in?






28. As a horseshoe kidney ascends during kidney development - What do they get trapped under?






29. What is the fate of the cervical sinuses that develop from the 2nd -4th branchial grooves?






30. Monochorionic - ___________ twins are conjoined






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






32. From What embryonic layer does the neurohypophysis arise?






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






34. What causes a patent foramen ovale?






35. From What embryonic layer is the eustachian tube from?






36. What is associated with only one umbilical artery?






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






38. From where does pons form from? what else forms from there?






39. _____________is common in 1st born males






40. WithIn what week does gastrulation occur? What is gastrulation?






41. From What embryonic layer does the pineal gland arise?






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






43. Which branchial apparatus develops into the inferior parathyroids?






44. By what week is there fetal movement?






45. what separates the atria from the ventricles?






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






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






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






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






50. From what branchial derivative do the parafollicular cells arise?