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. In what chromosomal disorder is horseshoe kidney commonly seen? what poles of the kidneys fuse?






2. Cleft palate is a failure of formation of the...






3. What does the foramen ovale shunt blood from - to where? What is its remnant?






4. What can vit A in excess cause in the fetus?






5. From What embryonic layer does the adenohypophysis arise?






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






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






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






9. During what week does the heart begin to beat?






10. From What embryonic layer does the lens of the eye arise?






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






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






13. what invaginates to form the primitive streak?






14. what happens in hydrocele?






15. What embryological structures give rise to the SVC?






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






17. What hormone is hcG structurally similar too?






18. What two cavities also form during the second week?






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






20. What is the physiological herniation that occurs at the 6th week - what herniates out of the umbilical ring? when it comes back in the 10th week - What does it rotate around?






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






22. What are markers for neural tube defects in the amniotic cavity? CSF?






23. What is meckel's diverticulum? What is it associated with? What does that cause?






24. what muscles are derived from branchial arch 2?






25. When does organogenesis occur?






26. What embryologic structure provides the aorticpulmonary septum?






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






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






29. Where is the most common ectopic thyroid tissue?






30. What is associated with only one umbilical artery?






31. Monochorionic - ___________ twins are conjoined






32. What do the 2nd through 4th clefts of the branchial apparatus correlate to?






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






34. Cleft lip is a failure of formation of the...






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






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






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






38. What embryologic structure gives rise to the smooth outflow tracts of the ventricles? what else does it give rise to?






39. Does deformation occur during or after the embryonic period? is it due to an extrinsic or intrinsic disruption?






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






41. From where does the ureteric bud arise? What does it give rise to?






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






43. what muscles are derived from branchial arch 1?






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






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






46. What causes meconium discharge from the umbilicus?






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






48. what muscles are derived from branchial arch 3?






49. When does hcG get secreted? What does it do?up until when ?






50. Which is more common - epispadias or hypospadias?