extends_fibers_into spinal nerve thoracic spinal cord thoracic nerve The twelve spinal nerves on each side of the thorax. They include eleven INTERCOSTAL NERVES and one subcostal nerve. Both sensory and motor, they supply the muscles and skin of the thoracic and abdominal walls. FMA:5860 UBERON:0003726 SCTID:360498003 neuronames:1725 thoracic spinal nerve Wikipedia:Thoracic_nerves pectoral nerve MESH:D013900 GAID:857