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 drug is used to help close a PDA? what else does this drug treat?






2. What axis does the alar plate form? what neural system does it become?






3. From what are the umbilical arteries and veins derived from?






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






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






6. In anencephaly you see...






7. Name two endocardial cushion defects.






8. What teratogens can cause renal damage in the fetus?






9. The spleen is ____________ in origin and supplied by a foregut artery






10. What does DHT turn the labioscrotal swelling into? estrogen?






11. Where is Wnt 7 gene produced?






12. Where is the most common ectopic thyroid tissue?






13. Before birth - blood entering the LA is less than...






14. What hormone is hcG structurally similar too?






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

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16. 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?






17. Which is more common - epispadias or hypospadias?






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






19. what bone/cartilage and nerves are derived from branchial arch 3?






20. How does annular pancreas present in children?






21. what separates the atria from the ventricles?






22. What axis is Wnt 7 responsible for developing?






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






24. What are two common findings in pyloric stenosis?






25. What embryologic structure provides the aorticpulmonary septum?






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






27. what week do the genitalia start to have male/female characteristics? What trimester is that?






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






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






30. From What embryonic layer do CNS neurons arise?






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






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






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






34. From what region do the thalami form?






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






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






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






38. From What embryonic layer is the vagina from? testes? ovaries?






39. What three layers form during gastrulation? From What do they form? and what week does gastrulation occur?






40. From What embryonic layer are the serous linings of the body cavities from? for ex - peritoneum?






41. From What embryonic layer does the epidermis arise?






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






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






44. How many components are there to the placenta? What are they called?






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






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






47. From what germ layer does the primitive heart tube arise?






48. Which CN allows for taste and sensation in the posterior 1/3 of the tongue? how about the very back ?






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






50. From What embryonic layer does the brain arise?