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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. What embryological structure gives rise to the coronary sinus?






2. From What embryonic layer are the melanocytes from?






3. What hormones are in charge of external genitalia development in the fetus? (in both male and female)






4. Which branchial apparatus makes the external auditory meatus?






5. Monochorionic - ___________ twins are conjoined






6. What is an example of a syndrome that can cause abnormal neural crest migration and thus CV abnormalities?






7. Which branchial derivative accounts for the posterior 2/3 of the tongue?






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






9. Which branchial derivative accounts for the sensation and taste in the posterior 2/3 of the tongue? how about the very back?






10. What embryological structures give rise to the SVC?






11. What can vit A in excess cause in the fetus?






12. Name two endocardial cushion defects.






13. Which branchial derivative accounts for taste in the ant 2/3?






14. What are the two components of the fetal component of the placenta?






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






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






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






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






19. What artery is derived branchial (aortic) arch 3?






20. Which CN accounts for the anterior 2/3 of the tongues sensation and pain? how about taste?






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






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






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






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






25. Where is erythropoeisis in the weeks 3-8 of fetal development? Where does it occur after that? until when?






26. What is congenital pharyngocutaneous fistula? and How does it occur?






27. Where does the blastocyst implant in the uterus? During what phase of the menstrual cycle?






28. What causes a vesicourachal diverticulum? What is it?






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






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






31. What does the RET gene encode? what neoplasias is it associated with?






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






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






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






35. From What embryonic layer does the oligodendrocytes arise?






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






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






38. failure to close of what fold results in sternal defects? omphalocele? gastrochisis? bladder extrosphy?






39. What secretes hCG?






40. What is germinal matrix hemorrhage associated with?






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






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






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






44. What day is the amnion formed?






45. Name a syndrome cleft palate is often seen in






46. WithIn what week does gastrulation occur? What is gastrulation?






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






48. Weeks _______ erythropoiesis takes place in the liver






49. What is the most common autopsy finding in brains of premature infants?






50. In what chromosomal disorder is horseshoe kidney commonly seen? what poles of the kidneys fuse?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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