Ependyma and Remnants of the Central Canal of the Spinal Cord

**Semantic type:** Tissue

**Definition:** Structures that have evolved from embryonic development of the neural tube. The ependyma is a specialised epithelium lining the ventricles and central canal of the brain and spinal cord. The remnants of the central canal of the spinal cord represent modified ependyma left from embryonic development of the neural tube