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 artery is derived branchial (aortic) arch 6?






2. ______________ is associated with ventral curvature of the penis






3. What does the maternal component of the placenta provide? Where is it derived from?






4. Which branchial apparatus develops into the thymus?






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






6. What embryological structure gives rise to the trabeculated part of the left and right atrium?






7. What is the Eisenmeger complex?






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






9. What embryological structures give rise to the SVC?






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






11. At what week does the fetus look like a baby?






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






13. What happens in pancreas divisum? what results?






14. What produces testis determining factor? what cells are produced from this? and What do they secrete? does this result in?






15. From which germlayer does the thyroid develop?? From what structure exactly?






16. What is the most common subtype of tracheoesophageal fistula? name some symptoms (hint: O2 levels - feeding - stomach on CXR - - amnios? - NG tube? - respiratory infection? )






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






18. From what region do the thalami form?






19. From What embryonic layer is the bladder and urethra from?






20. From What embryonic layer does the lens of the eye arise?






21. Only _______________________________ are associated with neural tube defects






22. With the first breath the infant take - pulmonary vasculature resistance _______ which causes an increase in left atrial pressure






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






24. When does hCG secretion take place? with what event?






25. From where does the medulla form?






26. To what germ layer does the branchial pouches correlate to?






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






28. From which branchial derivative does the anterior 2/3 of the tongue develop?






29. is epispadias or hypospadias associated with exstrophy of the bladder?






30. What do the arches of the branchial apparatus correlate to?






31. Which is more common - epispadias or hypospadias?






32. What does the midgut form? hindgut?






33. What embryologic structure provides the aorticpulmonary septum?






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






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






36. What separates the ant 1/3 and post 2/3 of tongue?






37. From What embryonic layer does bone arise ?






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






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






40. What are the three results of having pathology in the aorticopulmonary septum?






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






42. What germ layer correlates with the branchial pouches?






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






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






45. Where is the apical ectodermal ridge?






46. Monochorionic - ___________ twins are conjoined






47. From What embryonic layer does the oligodendrocytes arise?






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






49. From What embryonic layer is aorticopulmonary septum from ?






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