Anatomy & Physiology › Section L · Anatomy of the nervous system › Topic L.1
The embryologic perspective
The adult brain looks bewildering, but it begins as a simple hollow tube. Following that tube as it swells, folds and divides explains why the brain's regions are arranged as they are, which parts connect, and where its fluid-filled spaces come from.
In this topic
- From ectoderm to neural tube
- The neural crest
- Three primary vesicles
- Five secondary vesicles
- The hollow centre becomes the ventricles
- Sensory behind, motor in front
- Flexures and the neuraxis
- Worked example: tracing structures back
- Worked example: a neural crest problem
- When the tube fails to close
- Common mistakes to avoid
- Key takeaways
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