Thoracic Nerves [portable] Direct

| Nerve Group | Primary Distribution | Primary Function | | :--- | :--- | :--- | | | Brachial Plexus & 1st Intercostal Space | Upper limb sensation/movement; upper thorax sensation. | | T2–T6 | Thoracic Wall | Intercostal muscles (breathing); sensation of chest. | | T7–T11 | Thorax & Abdominal Wall | Abdominal muscles; sensation of abdomen. | | T12 | Subcostal (Below 12th Rib) | Lower abdominal muscles; sensation of lower abdomen/groin. |