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






2. How do AV canals form?






3. From What embryonic layer are the cardiovascular - lymphatics and blood from?






4. When does erythropoeisis begin in the bone marow?






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






6. How does annular pancreas present in children?






7. What causes the transposition of the great vessels? What does it result in?






8. What is contained in the umbilical cord?






9. Which CN accounts for the anterior 2/3 of the tongues sensation and pain? how about taste?






10. Cleft palate is a failure of fusion of the lateral palatine processes - the nasal septum and or the ________?






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






12. From where does the prostate develop? seminal vesicles? fallopian tube? lower 2/3 of the vagina? ejaculatory duct? epididymis? uterus? upper 1/3 of the vagina?






13. What does the first branchial pouch create?






14. what muscles are derived from branchial arch 4? CN?






15. When is most important to take folic acid to prevent neural tube defects?






16. What is the difference between agenesis and aplasia?






17. What is jejunal - ileal - colonic atresia usually due to? What do you see on x ray?






18. What role does the placenta have?






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






20. Where is the apical ectodermal ridge?






21. Gastroschisis is extrusion of abdominal contents out of abdominal folds ___________ by peritoneum






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






23. What causes persistent Truncus Arteriosus? What does it result in?






24. How many umbilical arteries are there? How many umbilical veins?






25. What are the clinical symptoms that present with syringomelia?






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






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






28. What teratogens can cause renal damage in the fetus?






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






30. What effect does warfarin have on the fetus?






31. What are two common findings in pyloric stenosis?






32. What is the memranous interventricular formaen made from?






33. From What embryonic layer do the ANS arise?






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






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






36. What surrounds the umbilical cord?






37. From What embryonic layer are the serous linings of the body cavities from? for ex - peritoneum?






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






39. Which branchial apparatus develops into the thymus?






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






41. From what does bicornuate uterus arise? What is it associated with?






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






43. What separated myometrium of the uterus from the blastocyst?






44. Which part of pancreas contribute to body? tail? isthmus? accessory pancreatic duct?






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






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






47. What is an example of a syndrome that can cause abnormal neural crest migration and thus CV abnormalities?






48. From What embryonic layer does the epidermis arise?






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






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