Spinal Ganglion of Second Thoracic Nerve

Description

The spinal ganglion (dorsal root ganglion or posterior root ganglion) is a sensory ganglion found at the proximal end of the posterior root of each spinal nerve.

The spinal ganglion of the second thoracic nerve conveys sensory information from the periphery and thoracic viscera to the dorsal horn of the second thoracic spinal segment of the spinal cord.

All somatic sensation associated with the second thoracic nerve, including the medial arm, axilla, second intercostal space, and skin of the upper trunk (see dermatome map) is conveyed by the neurons of the second thoracic spinal ganglion.

Some visceral afferent sensation from the thoracic organs (heart, lungs) is conveyed by neurons of the second thoracic spinal ganglion.