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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. From What embryonic layer does the olfactory epithelium arise?






2. From where does the medulla form?






3. Where is sonic hedgehog gene produced? What axis is it responsible in patterning?






4. Weeks _______ erythropoiesis takes place in the liver






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






6. What secretes hCG?






7. What causes tetralogy of Fallot?






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






9. What embryological structures give rise to the SVC?






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






11. What is a zygote?






12. Which branchial apparatus develops into the superior parathyroids?






13. What are the aspects of fetal alcohol syndrome?






14. What gene is produced in the zone of polarizing activity?






15. The notochord is...






16. What does the midgut form? hindgut?






17. What day is the amnion formed?






18. What hormone is hcG structurally similar too?






19. what junction is the last to canalize? what implications does this have down the line?






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






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






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






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






24. Where is the decidua basalis derived from?






25. 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?






26. By what week is there fetal movement?






27. What causes a vesicourachal diverticulum? What is it?






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






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






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






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






32. What axis is Wnt 7 responsible for developing?






33. What causes the obstruction in pyloric stenosis? treatment?






34. From what aortic arch does the first part of the maxillary artery arise?






35. What teratogens can cause discolored teeth?






36. Which branchial arch derivative is obliterated?






37. What is the kidney that functions at the interim kidney in the 1st trimester? What does it later contribute to?






38. From What embryonic layer does the skin dermis arise?






39. What hormones are in charge of external genitalia development in the fetus? (in both male and female)






40. From What do the embryoblast and trophoblast form from? What does the embryoblast split into? the trophoblast?






41. What surrounds the umbilical cord?






42. What is the initial step to interventricular septum development? is it complete?






43. What is the memranous interventricular formaen made from?






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






45. what separates the atria from the ventricles?






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






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






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






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






50. What three layers form during gastrulation? From What do they form? and what week does gastrulation occur?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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