The thoracic spinal nerves (T1–T12) are unique within the spinal nerve hierarchy due to their organized segmental distribution. Unlike the plexuses found in the cervical or lumbosacral regions, thoracic nerves maintain distinct dermatomes and myotomes. They provide motor innervation to the intercostal and abdominal wall muscles, sensory innervation to the thorax and abdomen, and autonomic functions via the sympathetic chain. This report details their anatomy, pathways, and clinical significance.
, which contributes to the brachial plexus); instead, they travel directly to the structures they innervate, primarily the chest and abdominal walls. Anatomical Branching thoracic nerve distribution
Supplies the deep muscles of the back and provides sensation to the skin of the back. Ventral (Anterior) Ramus: T11cap T 11 The thoracic spinal nerves (T1–T12) are unique within
The thoracic nerves are distributed throughout the thoracic region, including: This report details their anatomy, pathways, and clinical