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






2. From what does bicornuate uterus arise? What is it associated with?






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






4. What is the homeobox gene responsible in developing? (What axis)






5. What congenital abnormality forms a 'double bubble' on xray?






6. What does the ductus venosus shunt blood away from? What is its remnant?






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






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






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






10. From What embryonic layer does the thyroid follicular cells arise?






11. What is the mnueomonic for the mesodermal defects? What does it stand for?






12. When does organogenesis occur?






13. Which part of the chorionic villi can make cells?






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






15. Where is the decidua basalis derived from?






16. What teratogens can cause flipper limbs (limb defects)? What is this drug used for?






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






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






19. From What embryonic layer does the epidermis arise?






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






21. what muscles are derived from branchial arch 6? CN?






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






23. What arises from the fourth aortic arch?






24. What is an arnold chiari II malformation? through what hole does it herniate?






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






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






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






28. From What embryonic layer do the parafollicular cells of the thyroid arise?






29. what else is the caudal regression known as? What two teratogen can cause this in the fetus?






30. What causes meconium discharge from the umbilicus?






31. What is the difference between agenesis and aplasia?






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






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






34. What is the neural plate and From what does it form?






35. what chemo drugs can cause neural tube defects in the fetus?






36. From where does the medulla form?






37. What is the Eisenmeger complex?






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






39. What causes the decrease in Right atrial pressure to close the fossa ovale?






40. What causes a large posterior fossa in a dandy walker malformation? What is found in this fossa?






41. What results in annular pancreas? How does it happen?






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






43. What does the RET gene encode? what neoplasias is it associated with?






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






45. What does the vitelline duct connect? What is it also known as? when should it obliterate?






46. What can vit A in excess cause in the fetus?






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






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






49. What is the defect in spina bifida occulta? is there any structural herniation? where on the spinal cord is it usually seen?






50. At what week does the fetus look like a baby?