Click on the LEFT TOP BARS on the video screen to see the complete PLAYLIST

  • 1st video is a very short intro - its very clear!
  • 2- 8 are short and show the actual cells migrating to create these structures and other intros
  • You can just watch these and see what inspires you/ interests you
  • 9+ are more detail: If you have an interest in more information or specific tricky questions


WELCOME to the Online Embryo Course.

You are ALWAYS welcome to share a video, drawing , writing, feelings, either directly to Christine   -  or to the private facebook group or the email list.

Online Embryology Sources: Free Online Embryology- simple,  Free Online very detailed embryology, Blechschmidt models   

Audio and Text

Once the notocord has developed  - it becomes the organizing axis for all further development: cells know where they are in relationship to the notocord - whether above below , headward, tailward, and how many cels away they are. 

The ectoderm above the notocord folds inward until it pinches off to create a tunnel which separates and floats forward from the ectoderm. An important  process to close off this space that runs the whole length of the embryo is that the cells close and meet in the center, also zip up and down  from the middle until the neural tube is complete. It is now able to protect the nerves.

Then cells populate that tunnel , which become the spinal nerves. 

Below are progressions in development