Thoracic Sympathetic Trunk

The Thoracic Sympathetic trunk lies against the neck of the ribs in the upper part of the chest; at the midthoracic levels it rests against the costovertebral joints; and in the lower part of the thorax it is on the sides of the vertebral bodies. The trunk descends under cover of the parietal pleura and in front of the intercostal vessels and nerves. The distribution of fibers of the thoracic sympathetic trunk and Ganglia is upward to the cervical trunk and ganglia, downward to the lumbar ganglia, into thoracic spinal nerves by way of gray rami communcantes, by visceral branches to thoracic viscera, and by the thoracic splanchnic nerves to collateral ganglia in the abdomen.