Test your basic knowledge |

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






2. What happens in pancreas divisum? what results?






3. As a horseshoe kidney ascends during kidney development - What do they get trapped under?






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






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






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






7. From what arches are the neural crest cells that form the aorticpulmonary septum derived?






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






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






10. What embryological structures give rise to the SVC?






11. What separates the ant 1/3 and post 2/3 of tongue?






12. which tracts are damaged first in syringomelia? What tract is preserved?






13. Where is the decidua basalis derived from?






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






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






16. Pyloric stenosis is characterized by _____________ of muscularis externis in the sphincter






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






18. What is the leading cause of birth defects in the US? what else is this perpetrator the leading cause of?






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






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






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






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






23. What type of blood do umbilical arteries carry? From where to where?






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






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






26. From what region of the brain does the aqueduct form?






27. What teratogen can cause IUGR and ADHD in a fetus? what else can this teratogen cause?






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






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






30. From What embryonic layer is the kidney and the adrenal cortex from?






31. What does DHT turn the urogenital sinus into? estrogen?






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






33. What do the 2nd through 4th clefts of the branchial apparatus correlate to?






34. From What embryonic layer does the parathyroid arise ?






35. From What embryonic layer does the adenohypophysis arise?






36. What are two common findings in pyloric stenosis?






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






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






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






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






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






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






43. What teratogen can cause inhibition of intestinal folate absorption and thus neural tube defects?






44. What gene is produced in the zone of polarizing activity?






45. Which arches form the posterior 1/3 of the tongue?






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






47. What are the three results of having pathology in the aorticopulmonary septum?






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






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






50. With the first breath the infant take - pulmonary vasculature resistance _______ which causes an increase in left atrial pressure