Brain development - Phases of brain development

5 important questions on Brain development - Phases of brain development

Embryonic disk:
  1. number of layers
  2. function of number of layers

  1. 3-layerd structure
  2. give rise to different parts of the body
    • endoderm
    • mesoderm
    • ectoderm

A crease develops along the axis of the neural plate, creating:

  • The neural groove
  • the edges (neural folds) gradually move together

Where the neural folds meet:

They fuse to form a cylindrical neural tube that loses its connection with the superficial ectoderm
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Circumferential dimension (tangential to the surface) in the neural tube is critical, because

The distinction between sensory and motor systems develops along this dimension:
  • dorsal (topside)
  • ventral (bottom-side)

Big difference from the premature birth and the womb development

In the former the baby needs to breath and eat even though it still doesn't have a complete respiratory and digestive system

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