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






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






3. Which branchial derivative creates the middle ear cavity - eustachian tube and mastoid air cells?






4. From what arches are the neural crest cells that form the aorticpulmonary septum derived?






5. What causes urine discharge from the umbilicus?






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






7. What part of the gut rotates around the SMA? and At what point?






8. What axis is Wnt 7 responsible for developing?






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






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






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






12. Name two endocardial cushion defects.






13. What two things cause VACTERL syndrome?






14. With the first breath the infant take - pulmonary vasculature resistance _______ which causes an increase in left atrial pressure






15. What embryologic structure provides the aorticpulmonary septum?






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






17. Weeks _______ erythropoiesis takes place in the liver






18. What surrounds the umbilical cord?






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






20. From What embryonic layer do the ANS arise?






21. What is a teratogen that causes Ebsteins anomaly? What is ebsteins anomaly?

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






23. From where did a branchial cleft cyst arise if it found?






24. From What embryonic layer does the olfactory epithelium arise?






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






26. From What embryonic layer does a craniopharygioma arise?






27. What embryonic structure gives rise to the ascending aorta? what else does it give rise to?






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






29. What causes meconium discharge from the umbilicus?






30. What happens in pancreas divisum? what results?






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






32. Which arches form the posterior 1/3 of the tongue?






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






34. What does the ductus arteriosus shunt blood away from - to where? What is its remnant?






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






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






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






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






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






40. By what week is there fetal movement?






41. Cleft lip is a failure of fusion of ________ and ______.






42. What artery is derived branchial (aortic) arch 2?






43. How does annular pancreas present in children?






44. Which branchial apparatus derivative makes the tympanic membrane of the ear?






45. Where does the blastocyst implant in the uterus? During what phase of the menstrual cycle?






46. What is the mcc of renovascular hypertension in children? What does this predispose to?






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






48. What is the mnueomonic for the mesodermal defects? What does it stand for?






49. In order to survive tricuspid atresia - What do you need?






50. what muscles are derived from branchial arch 3?







Sorry!:) No result found.

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