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 type of blood do umbilical arteries carry? From where to where?






2. What separates the ant 1/3 and post 2/3 of tongue?






3. From What embryonic layer do the ANS arise?






4. What does DHT turn the urogenital sinus into? estrogen?






5. From where to Where is the foregut derivative? midgut? hindgut?






6. From where does the medulla form?






7. What day is the chorion formed?






8. what else is the caudal regression known as? What two teratogen can cause this in the fetus?






9. What do the arches of the branchial apparatus correlate to?






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






11. Where is the mothers blood located in the placenta?






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






13. What embryologic structure provides the aorticpulmonary septum?






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






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






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






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






18. What secretes hCG?






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






20. From What embryonic layer is the vagina from? testes? ovaries?






21. What effect does warfarin have on the fetus?






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






23. What artery is derived branchial (aortic) arch 3?






24. Which branchial apparatus develops into the thymus?






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






26. What is the effect of teratogens before week 3?






27. Which part of the branchial apparatus makes up membranes?






28. ______________ is associated with ventral curvature of the penis






29. What are the aspects of fetal alcohol syndrome?






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






31. From which branchial derivative does the anterior 2/3 of the tongue develop?






32. What is the female remnant of the gubernaculum? male remnant?






33. How does annular pancreas present in children?






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






35. which posterior fossa malformation results in aqueductal stenosis and hydrocephaly? what other spinal cord lesion does this malformation present with?






36. From What embryonic layer does connective tissue and muscle arise?






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






38. Which branchial derivative accounts for the posterior 2/3 of the tongue?






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






40. From What embryonic layer does a craniopharygioma arise?






41. What causes the degeneration of the spinal cord in syringomelia?






42. What teratogen can cause an absence of digits amongst other things in the fetus? give an example.






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






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






45. what muscles are derived from branchial arch 3?






46. What are the three results of having pathology in the aorticopulmonary septum?






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






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






49. What is Treacher Collins syndrome? What is the result?






50. When does organogenesis occur?