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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. By what week is the neural tube supposed to be closed? when did it start forming?






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






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






4. What part of the gut rotates around the SMA? and At what point?






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






6. From What embryonic layer does a craniopharygioma arise?






7. What does DHT turn the urogenital folds into? estrogen?






8. What is the memranous interventricular formaen made from?






9. What teratogens can cause discolored teeth?






10. What artery is derived branchial (aortic) arch 4?






11. From what region does the midbrain form from?






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






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






14. What layer is the epiblast? hypoblast?






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






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






17. Gastroschisis is extrusion of abdominal contents out of abdominal folds ___________ by peritoneum






18. From What embryonic layer are the pia and arachnoid from?






19. What embryological structures give rise to the SVC?






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






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






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






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






24. What is the mcc of renovascular hypertension in children? What does this predispose to?






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






26. Where is the most common ectopic thyroid tissue?






27. What are the two components of the placenta? From What do they form? which one secreted hcG?






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






29. From What embryonic layer do the parafollicular cells of the thyroid arise?






30. What is associated with only one umbilical artery?






31. what invaginates to form the primitive streak?






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






33. From What embryonic layer is the spleen from?






34. Which branchial apparatus develops into the inferior parathyroids?






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






36. What axis is Wnt 7 responsible for developing?






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






38. From What embryonic layer does the gut tube derivatives arise (lungs liver - pancreas - parathryroid - thyroid follicular cells - thymus)?






39. From what aortic arch does the common carotid artery arise? what else arises from this arch?






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






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






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






43. Only _______________________________ are associated with neural tube defects






44. Where is the apical ectodermal ridge?






45. which teratogen can cause Ebsteins anomaly in the fetus?






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






47. By what week is there fetal movement?






48. Cleft palate is a failure of fusion of the lateral palatine processes - the nasal septum and or the ________?






49. What does the ureteric bud interact with and What does it induce it to become?






50. Where is the decidua basalis derived from?







Sorry!:) No result found.

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