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






2. What causes a patent foramen ovale?






3. What causes meconium discharge from the umbilicus?






4. What is a syrinx? Where is it found in syringomelia? What is it associated with?






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






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






7. Monochorionic - ___________ twins are conjoined






8. Where is Wnt 7 gene produced?






9. From What embryonic layer are the dorsal root and celiac ganglion from?






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






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






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






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






14. What connects the thyroid to the tongue? when happens if it doesnt obliterate?






15. What is omphalocele? In What trisomies is it seen?






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






17. What is the difference between agenesis and aplasia?






18. Name two endocardial cushion defects.






19. From What embryonic layer are the schwann cells from ?






20. Where is erythropoeisis in the weeks 3-8 of fetal development? Where does it occur after that? until when?






21. ______________ is associated with ventral curvature of the penis






22. From What embryonic layer does the epithelial linings of the oral cavity arise?






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






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






25. What teratogens can cause flipper limbs (limb defects)? What is this drug used for?






26. In anencephaly you see...






27. What do membranous interventricular septal defect cause? What does this lead to?






28. What causes tetralogy of Fallot?






29. what closes the ductus arteriousus?






30. What is annular pancreas associated with in infants?






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






32. From What embryonic layer does the gut tube epithelium arise?






33. What trisomy is associated with holoprosencephaly? What teratogen?






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






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






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






37. From where does the permanent kidney for? is it most caudal or most cranial?






38. What embryological structures give rise to the SVC?






39. what muscles are derived from branchial arch 2?






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






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






42. What is the allantois become? What is this duct connected to ( on both ends)?






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






44. What are the neural crest cells and where do they come form? where do they go?






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






46. what muscles are derived from branchial arch 1?






47. From where does the medulla form?






48. What results in annular pancreas? How does it happen?






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






50. From What embryonic layer does the pineal gland arise?