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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 causes persistent Truncus Arteriosus? What does it result in?






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






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






4. From What embryonic layer does bone arise ?






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






6. What is associated with only one umbilical artery?






7. From What embryonic layer does bone of the skulls arise?






8. By what week is there fetal movement?






9. What do membranous interventricular septal defect cause? What does this lead to?






10. From What do the embryoblast and trophoblast form from? What does the embryoblast split into? the trophoblast?






11. what closes the ductus arteriousus?






12. Gastroschisis is extrusion of abdominal contents out of abdominal folds ___________ by peritoneum






13. What axis does the alar plate form? what neural system does it become?






14. Monochorionic - ___________ twins are conjoined






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






16. What do the groove/clefts of the branchial apparatus correlate to?






17. From What embryonic layer does a craniopharygioma arise?






18. Cleft lip is a failure of formation of the...






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






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






21. what bone/cartilage and nerves are derived from branchial arch 3?






22. What surrounds the umbilical cord?






23. Before birth - blood entering the LA is less than...






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






25. Which branchial arch derivative is obliterated?






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






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






28. In anencephaly you see...






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






30. What produces testis determining factor? what cells are produced from this? and What do they secrete? does this result in?






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






32. From What embryonic layer does the inner arise?






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






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






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






36. what muscles are derived from branchial arch 2?






37. The inner layer of the chorionic villi...






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






39. From What embryonic layer does the adenohypophysis arise?






40. What is a teratogen that causes Ebsteins anomaly? What is ebsteins anomaly?

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41. From What embryonic layer is the eustachian tube from?






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






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






44. which genital embryology is default? From what duct? what duct degenerates without signal to stay?






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






46. When does erythropoeisis begin in the bone marow?






47. From What embryonic layer do the ANS arise?






48. in hypospadias - on which side is the abnormal opening? What causes it?






49. What is meckel's diverticulum? What is it associated with? What does that cause?






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