Spinal cord

This section shows the spinal cord with its attached spinal roots and paired dorsal root ganglia on either side of the cord. 15x

This section shows the spinal cord with its attached spinal roots and paired dorsal root ganglia on either side of the cord. 15x

This section shows the spinal cord with its attached spinal roots and paired dorsal root ganglia on either side of the cord. 15x

The dorsal root contains the central processes of pseudounipolar neurons whose cell bodies are located in the dorsal root ganglion. These axons continue in the dorsal root into the spinal cord conveying sensory information.

The dorsal root contains the central processes of pseudounipolar neurons whose cell bodies are located in the dorsal root ganglion. These axons continue in the dorsal root into the spinal cord conveying sensory information.

The ventral root contains motor axons from multipolar neurons whose cell bodies are located in the ventral horn of the grey matter. Their axons pass in the spinal nerve to innervate muscle tissues in the periphery.

The spinal nerve is formed by the fusion of the dorsal and ventral roots.

The central canal is continuous with the ventricular system in the brain and contains cerebrospinal fluid. The canal is lined by a simple cuboidal to columnar epithelium composed of ependymal cells.