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 female remnant of processus vaginalis? male remnant?






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






3. From What embryonic lare are the odontoblasts from?






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






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






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






7. When does the blastocyst split into two disks? What is this disk called? What are the two germ layers called?






8. What part of the fetal comp of the placenta secretes hCG? is this part on the inner or outer layer of the chorionic villi? does it make cells?






9. What embryological structures give rise to the SVC?






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






11. what separates the atria from the ventricles?






12. What is the primitive streak? From what layer does it form?






13. What hormone is hcG structurally similar too?






14. What causes a large posterior fossa in a dandy walker malformation? What is found in this fossa?






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






16. What does the midgut form? hindgut?






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






18. What is DiGeorge syndrome and What does it result in?






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






20. What is perinauds syndrome?






21. what results if they dont? What can increase the risks of this?






22. From what region of the brain does the lateral ventricles and the 3rd ventricle form?






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






24. What teratogen can cause inhibition of intestinal folate absorption and thus neural tube defects?






25. From where to Where is the foregut derivative? midgut? hindgut?






26. Which part of the chorionic villi can make cells?






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






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






29. 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?






30. Most myelomeningoceles present in the _______ region






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






32. From What do the embryoblast and trophoblast form from? What does the embryoblast split into? the trophoblast?






33. From what region of the brain does the fourth ventricle form?






34. What happens in pancreas divisum? what results?






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






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






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






38. what bone/cartilage and nerves are derived from branchial arch 1?






39. In both meningocele and myelomeningocele the dura...






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






41. From What embryonic layer do the astrocytes arise?






42. What type of blood do umbilical veins carry? From where to where?






43. What surrounds the umbilical cord?






44. What day is the amnion formed?






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






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






47. What is used to keep the PDA open?






48. From where is the allantois formed? During what week?






49. What teratogen can cause IUGR and ADHD in a fetus? what else can this teratogen cause?






50. From What embryonic layer is aorticopulmonary septum from ?