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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 two things cause VACTERL syndrome?






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






3. Name a syndrome cleft palate is often seen in






4. From where did a branchial cleft cyst arise if it found?






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






6. From where does the signal come from to suppress paramesonephric ducts? what stimulates development of the mesonephric ducts?






7. From what region of the brain does the fourth ventricle form?






8. What causes tetralogy of Fallot?






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






10. When does organogenesis occur?






11. How does annular pancreas present in children?






12. What are the two types of posterior fossa malformations? which one results in a hindbrain crowding? and which results in an enlarged posterior fossa? which one is associated with syringomelia?






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






14. What teratogens can cause discolored teeth?






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






16. How is amniontic fluid excreted? How is amniotic fluid resorped?






17. Where is Wnt 7 gene produced?






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






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






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






21. How do you differentiate a thyroglossal duct cyst from a persistent cervical sinus?






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






23. What causes urine discharge from the umbilicus?






24. What is a syrinx? Where is it found in syringomelia? What is it associated with?






25. From What embryonic layer does the epidermis arise?






26. What is Treacher Collins syndrome? What is the result?






27. What day is the amnion formed?






28. What is the effect of teratogens after week 8?






29. What embryonic structure gives rise to the ascending aorta? what else does it give rise to?






30. what closes the interventricular foramen?






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






32. What is the Eisenmeger complex?






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






34. From What embryonic layer does the spinal cord arise?






35. What is the 'fetal period'- ie When is it?






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






37. What type of - amnios does bilateral agenesis form? What three symptoms does this cause?






38. What separated myometrium of the uterus from the blastocyst?






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






40. What embryologic structure provides the aorticpulmonary septum?






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






42. From What embryonic layer does connective tissue and muscle arise?






43. What type of radiation is teratogenic ?






44. what bone/cartilage are derived from branchial arch 4-6?






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






46. By when are the neuropores supposed to fuse?






47. Which branchial apparatus develops into the superior parathyroids?






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






49. From what region does the midbrain form from?






50. What is used to keep the PDA open?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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