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 'fetal period'- ie When is it?






2. in hypospadias - on which side is the abnormal opening? What causes it?






3. What congenital abnormality forms a 'double bubble' on xray?






4. From What embryonic layer is the eustachian tube from?






5. What role does the placenta have?






6. From What embryonic layer is aorticopulmonary septum from ?






7. Where is sonic hedgehog gene produced? What axis is it responsible in patterning?






8. What is the female remnant of processus vaginalis? male remnant?






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






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






11. What is associated with only one umbilical artery?






12. From What embryonic layer are the melanocytes from?






13. Monochorionic - ___________ twins are conjoined






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






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






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






17. What is contained in the umbilical cord?






18. What artery is derived branchial (aortic) arch 1?






19. what chemo drugs can cause neural tube defects in the fetus?






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






21. From where does the medulla form?






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






23. What hormone is hcG structurally similar too?






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






25. What does the first cleft/groove of the branchial apparatus develop into?






26. The inner layer of the chorionic villi...






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






28. The spinal cord is made from...






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






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






31. Which parts of the pancreas contribute to the head - uncinate process and main pancreatic duct?






32. Blood coming in the umbilical vein is ____ saturated






33. Which is more common - epispadias or hypospadias?






34. which tracts are damaged first in syringomelia? What tract is preserved?






35. Septum primum (patent foramen oval) caused by excessive resorption of...






36. What are the clinical symptoms that present with syringomelia?






37. Name a syndrome cleft palate is often seen in






38. On what side is the abnormal opening in epispadias? What causes it?






39. What day is the amnion formed?






40. The notochord is...






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






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






43. Which part of pancreas contribute to body? tail? isthmus? accessory pancreatic duct?






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






45. What is perinauds syndrome?






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






47. From What embryonic layer are the cardiovascular - lymphatics and blood from?






48. What is the neural plate and From what does it form?






49. From What embryonic layer is the kidney and the adrenal cortex from?






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