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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. The spleen is ____________ in origin and supplied by a foregut artery






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






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






4. From What embryonic layer does the sensory organs of the ear arise?






5. The notochord is...






6. Monochorionic - ___________ twins are conjoined






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






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






9. Where is the most common ectopic thyroid tissue?






10. From What embryonic layer is the spleen from?






11. Where is the mothers blood located in the placenta?






12. Blood coming in the umbilical vein is ____ saturated






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






14. What is DiGeorge syndrome and What does it result in?






15. What does the foramen ovale shunt blood from - to where? What is its remnant?






16. From what germ layer does the primitive heart tube arise?






17. What causes the degeneration of the spinal cord in syringomelia?






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






19. From What embryonic layer does the adenohypophysis arise?






20. From What embryonic layer is the vagina from? testes? ovaries?






21. Where does fertilization occur?






22. During what week does the heart begin to beat?






23. From where is amniotic fluid produced? other than electrolytes and carbs - what else does it contain?






24. From What embryonic layer does bone arise ?






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






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






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






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






29. What is the female remnant of the gubernaculum? male remnant?






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






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






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






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






34. Which branchial apparatus develops into the thymus?






35. what invaginates to form the primitive streak?






36. Which parts of the pancreas contribute to the head - uncinate process and main pancreatic duct?






37. Cleft palate is a failure of formation of the...






38. Which branchial apparatus makes the external auditory meatus?






39. From What embryonic layer does the skin dermis arise?






40. What surrounds the umbilical cord?






41. What effect does warfarin have on the fetus?






42. When does erythropoeisis begin in the bone marow?






43. What is hypoplasia? is primordial tissue present?






44. When does the blastocyst split into two disks? What is this disk called? What are the two germ layers called?






45. 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?






46. During what week do the limbs begin to form?






47. What is the Eisenmeger complex?






48. What embryologic structure provides the aorticpulmonary septum?






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






50. what closes the interventricular foramen?







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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