Spinal Ganglion of First 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 first thoracic nerve conveys sensory information from the periphery to the dorsal horn of the first thoracic spinal segment of the spinal cord.

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

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