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






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






3. From What embryonic layer does the olfactory epithelium arise?






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






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






6. What is another name for the mesonephric duct? paramesonephric?






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






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






9. What causes urine discharge from the umbilicus?






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






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






12. What happens in pancreas divisum? what results?






13. From What embryonic layer does the brain arise?






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






15. What is the female remnant of processus vaginalis? male remnant?






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






17. From What embryonic layer does the neurohypophysis arise?






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






19. Which part of the branchial apparatus makes up membranes?






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






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






22. Monochorionic - ___________ twins are conjoined






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






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






25. What does the ductus arteriosus shunt blood away from - to where? What is its remnant?






26. What is duodenal atresia usually due to? What trisomy is it most often seen in?






27. What embryologic structure provides the aorticpulmonary septum?






28. What causes a patent foramen ovale?






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






30. what muscles are derived from branchial arch 1?






31. In both meningocele and myelomeningocele the dura...






32. Blood coming in the umbilical vein is ____ saturated






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






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






35. What does DHT turn the genital tubercle into? estrogen?






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






37. Does malformation occur during or after the embryonic period? is it due to an extrinsic or intrinsic disruption?






38. From what region does the midbrain form from?






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






40. What axis is Wnt 7 responsible for developing?






41. From What embryonic layer does the thyroid follicular cells arise?






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






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






44. From What embryonic layer does the parathyroid arise ?






45. How do adults with annular pancreas present? and At What age?






46. what junction is the last to canalize? what implications does this have down the line?






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






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






49. What causes a large posterior fossa in a dandy walker malformation? What is found in this fossa?






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






Can you answer 50 questions in 15 minutes?



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