*The neural tube undergoes regionalisation to define the anterior as the brain and posterior as the spinal cord.
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*The neural tube undergoes regionalisation to define the anterior as the brain and posterior as the [[Spinal Cord - Anatomy & Physiology|spinal cord]].
*In the anterior, the neural tube swells into the three ventricles of the brain; forebrain; midbrain; and hindbrain.
*In the anterior, the neural tube swells into the three ventricles of the brain; forebrain; midbrain; and hindbrain.
**This occurs as fluid is pumped into the lumen of the neual tube.
**This occurs as fluid is pumped into the lumen of the neual tube.