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USMLE Embryo

Subjects : health-sciences, usmle
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. From What embryonic layer are the serous linings of the body cavities from? for ex - peritoneum?






2. What is annular pancreas associated with in infants?






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






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






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






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






7. what bone/cartilage and nerves are derived from branchial arch 1?






8. What does the ductus venosus shunt blood away from? What is its remnant?






9. Which branchial apparatus develops into the inferior parathyroids?






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






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






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






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






14. What two cavities also form during the second week?






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






16. Which branchial apparatus makes the external auditory meatus?






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






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






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






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






21. What day is the amnion formed?






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






23. what muscles are derived from branchial arch 2?






24. From What embryonic layer do CNS neurons arise?






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






26. what closes the ductus arteriousus?






27. What causes the obstruction in pyloric stenosis? treatment?






28. What role does the placenta have?






29. From What embryonic layer does a craniopharygioma arise?






30. In anencephaly you see...






31. What germ layer correlates with the branchial pouches?






32. What causes a patent foramen ovale?






33. From what branchial derivative do the parafollicular cells arise?






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






35. what structures are the derivatives of the neural crest cells in branchial arches?






36. From what does bicornuate uterus arise? What is it associated with?






37. What are the three regions of the brain (in order of cranial to caudal)?






38. What are the aspects of fetal alcohol syndrome?






39. What is the primitive streak? From what layer does it form?






40. From what region do the thalami form?






41. Where is Wnt 7 gene produced?






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






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






44. What is the allantois become? What is this duct connected to ( on both ends)?






45. From where is the pancreas derived? the spleen?






46. From where do the three different kidneys come from? Which is the earliest one? is it located most cranially or caudally?






47. Which branchial apparatus develops into the thymus?






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






49. How does annular pancreas present in children?






50. what muscles are derived from branchial arch 4? CN?







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