Dorsal root ganglion

The dorsal root ganglion ( spinal ganglion ), and dorsal, intervertebral or dorsal (English dorsal root ganglion ), is established or situated within the vertebral canal, nerve node ( ganglion ) of nerve cells of the peripheral nervous system. It represents a collection of nerve cell bodies of those neurons that carry afferent signals to the dorsal horn of the spinal cord via sensory nerve fibers. Per spinal cord segment per a spinal ganglion is formed on both sides, in the intervertebral foramen ( intervertebral foramen ) of the associated segment lies.

The dorsal root ganglion contains so-called pseudounipolar nerve cells. Their dendrites collect by segment sensitive information from the body except the head portion ( where the cranial nerves take over this task ). The axons of these neurons derive information about the dorsal nerve root ( radix posterior or dorsal ) in the spinal cord. The nerve cell bodies of dorsal root ganglion cells are surrounded by special glial cells, the sheath cells ( satellite cells ). Extend between the nerve cells capillaries - fenestrated are - in contrast to those of the central nervous system.