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. From What embryonic layer does the epithelial linings of the oral cavity arise?






2. What is annular pancreas associated with in infants?






3. From where does the medulla form?






4. What part of the fetal comp of the placenta secretes hCG? is this part on the inner or outer layer of the chorionic villi? does it make cells?






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






6. What is perinauds syndrome?






7. From What embryonic layer does the oligodendrocytes arise?






8. What causes tetralogy of Fallot?






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






10. What are the two components of the fetal component of the placenta?






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






12. What teratogens can cause discolored teeth?






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






14. What components do the neural crest cells of the branchial arches give rise to?






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






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






17. which posterior fossa malformation results in aqueductal stenosis and hydrocephaly? what other spinal cord lesion does this malformation present with?






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






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






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






21. Monochorionic - ___________ twins are conjoined






22. What is the Eisenmeger complex?






23. From What embryonic layer are the schwann cells from ?






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






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






26. How does annular pancreas present in children?






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






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






29. From where does pons form from? what else forms from there?






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






31. Which CN allows for taste and sensation in the posterior 1/3 of the tongue? how about the very back ?






32. What are markers for neural tube defects in the amniotic cavity? CSF?






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






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






35. Name two endocardial cushion defects.






36. On what side is the abnormal opening in epispadias? What causes it?






37. By what week is there fetal movement?






38. What does the first branchial pouch create?






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






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






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






42. From What embryonic layer does bone arise ?






43. From What embryonic layer do chromaffin cells arise?






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






45. From What embryonic layer does the adenohypophysis arise?






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






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






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






49. Where is the decidua basalis derived from?






50. What does the midgut form? hindgut?