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






2. From What embryonic layer does the neurohypophysis arise?






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






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






5. what other facial defect other than cyclopia is associated with holoprosencephaly?






6. In anencephaly you see...






7. is epispadias or hypospadias associated with exstrophy of the bladder?






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






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






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






11. Where is the decidua basalis derived from?






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






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






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






15. What happens in pancreas divisum? what results?






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






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






18. What is the most common autopsy finding in brains of premature infants?






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






20. 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?






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






22. Before birth - blood entering the LA is less than...






23. From What embryonic layer is the spleen from?






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






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






26. 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?






27. What does the ureteric bud interact with and What does it induce it to become?






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






29. Which branchial apparatus develops into the thymus?






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






31. What causes the decrease in Right atrial pressure to close the fossa ovale?






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






33. For what reason do hypospadias need to be fixed?






34. From What embryonic layer does the spinal cord arise?






35. What is used to keep the PDA open?






36. What are the three regions of the brain (in order of cranial to caudal)?






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






38. How does annular pancreas present in children?






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






40. What are two common findings in pyloric stenosis?






41. Which branchial apparatus develops into the inferior parathyroids?






42. What is germinal matrix hemorrhage associated with?






43. From what region does the midbrain form from?






44. From What embryonic layer is aorticopulmonary septum from ?






45. From where is the pancreas derived? the spleen?






46. What artery is derived branchial (aortic) arch 4?






47. What is hypoplasia? is primordial tissue present?






48. What secretes hCG?






49. Which cranial nerve innervates the motor function of the tongue?






50. From What embryonic layer are the pia and arachnoid from?