- Mouthing pattern
- Soft spine pattern
- lancelet
2 Further tubes..
- Notocord = Soft. Becomes the spine disks. Pre spinal pattern
- Neurotube = Becomes the brain and spinal cord. Later become protected by bone (skull and spine)
Front of the body- Digestive track
Back of the body- Reminance of the neural tube
Front of the body- Reminance of the notocord
Baby 15-20 weeks = Pre spinal pattern
baby 3-4 months = Spinal pattern
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