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 causes a vesicourachal diverticulum? What is it?






2. From What embryonic lare are the odontoblasts from?






3. From What embryonic layer do the salivary - sweat and mammary glands arise?






4. What weeks are considered the 'embryonic period'?






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






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






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






8. What is hypoplasia? is primordial tissue present?






9. what muscles are derived from branchial arch 3?






10. What teratogen can cause vaginal clear cell adenocarcinoma in the fetus?






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






12. What does the midgut form? hindgut?






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






14. Monochorionic - ___________ twins are conjoined






15. How is amniontic fluid excreted? How is amniotic fluid resorped?






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






17. Where is the decidua basalis derived from?






18. During what months is the fetus most susceptible to teratogens? What trimester?






19. From What embryonic layer does the thyroid follicular cells arise?






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






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






22. Which branchial arch derivative is obliterated?






23. How do adults with annular pancreas present? and At What age?






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






25. From what does bicornuate uterus arise? What is it associated with?






26. From where does the pulmonary arteries and the ductus arteriosus arise?






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






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






29. Which branchial derivative creates the epithelial lining of the palatine tonsils?






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






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






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






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






34. During what periods do the damages that cerebral palsy causes occur?






35. From What embryonic layer do the ependymal cells arise?






36. From What embryonic layer does the sensory organs of the ear arise?






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






38. What components do the mesoderm of the branchial arches give rise to?






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






40. What causes a patent foramen ovale?






41. From where do the three different kidneys come from? Which is the earliest one? is it located most cranially or caudally?






42. How many umbilical arteries are there? How many umbilical veins?






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






44. From What embryonic layer does the parathyroid arise ?






45. which genital embryology is default? From what duct? what duct degenerates without signal to stay?






46. What embryological structure gives rise to the coronary sinus?






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






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






49. What is the homeobox gene responsible in developing? (What axis)






50. What axis is Wnt 7 responsible for developing?