"The anterior ramus of the twelfth thoracic nerve is referred to as the subcostal nerve. Although similar to the intercostal nerves, it is technically not an intercostal nerve because it is not “intercostal” (because there is not a thirteenth rib). In medical gross anatomy courses the subcostal nerve is typically dissected with the lumbar plexus as it travels directly inferiorly to the twelfth rib. The subcostal nerve passes posterior to the lateral arcuate ligament of the diaphragm and the kidney, and anterior to the superior part of quadratus lumborum muscle. It penetrates the aponeurosis of the transversus abdominis muscle to pass anteriorly between it and the internal abdominal oblique muscle. The subcostal nerve supplies motor innervation to the anterolateral abdominal wall muscles and sensory innervation to the skin of the lower abdomen.1"
"Gross Anatomy"
"Clinical Considerations"
"Clinical Considerations"
Expected headings
"Gross Anatomy"
"Clinical Considerations"