Notochord, Neural Tube and Embryo Folding

Notochord formation, neural tube folding are a part of the embryonic development that takes place in the first couple of weeks. It is a very intricate process which give rise to the structures found in fully developed human.

Can you answer all the questions relating to to this aspect of embryonic development? Have you mastered these highly detailed topics? Lets see, shall we?

Created by: Lasonya Fletcher
  1. Where does the development of the notochord begin?
  2. Appearance of the notochord and prechordal mesoderm induces:
  3. Which end of the primitive streak thickens to form Henson's Node?
  4. In which week does gastrulation occur?
  5. The formation of the primitive streak marks the beginning of
  6. What is the name giving to the localized thickening in the midline towards the cranial end of the hypoblast?
  7. Formation of the notochord starts in the early part of
  8. The process by which cells of the epiblast migrate toward the primitive streak, become flask-shaped and detach from and slip beneath the epiblast is known as:
  9. what displaces the hypoblast in the developing embryo?
  10. Depression in the centre of the primitive node is known as the
  11. The ectoderm is formed by
  12. The floor of the notochordal canal becomes intercalated with the underlying ectoderm and gradually disappears with part of the hypoblast resulting in
  13. The embryonic endoderm arises from the
  14. The notochord is essential for all of the following except:
  15. Intra-embryonic mesoderm differentiates into all of the following except
  16. Disturbed inductive influence of the notochord on the body axis and folding of the embryo can cause:
  17. Which vertebral defect is characterized by tufts of hair in the region of the defect and results from a failure of fusion of the embryonic halves of the vertebral arch?
  18. True or False. The autonomic nervous system and sensory ganglia formation are influenced by the neural crest.
  19. By day 26 of development:
  20. The telencephalon and the diencephalon arises from the
  21. All of the following are associated with increased alpha-fetoproteins except
  22. A part of which structure is incorporated into the embryo as the foregut?
  23. Whats the name of the connecting stalk to the yolk sac?
  24. The oropharyngeal membrane develops from the
  25. Which two structures make up the developing heart?

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