Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Subcostal nerve
Introduction
The anterior division of the twelfth thoracic nerve (subcostal nerve) is larger than the others; it runs along the lower border of the twelfth rib, often gives a communicating branch to the first lumbar nerve, and passes under the lateral lumbocostal arch.
It then runs in front of the Quadratus lumborum, perforates the Transversus, and passes forward between it and the Obliquus internus to be distributed in the same manner as the lower intercostal nerves.
It communicates with the iliohypogastric nerve of the lumbar plexus, and gives a branch to the Pyramidalis. It also gives off a lateral cutaneous branch that supplies sensory innervation to the skin over the hip.
Additional images
Additional images
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Nervous system -
The posterior divisions of the sacral nerves. -
Plan of lumbar plexus. -
Cutaneous nerves of right lower extremity. Posterior view.
External links
External links
- Template:MUNAnatomy
- Template:NormanAnatomy (Template:NormanAnatomyFig)
- Template:NormanAnatomy
- Template:UMichAtlas – “Posterior Abdominal Wall, Dissection, Anterior View”
- Template:SUNYAnatomyFigs – “Muscles and nerves of the posterior abdominal wall.”
- Template:SUNYAnatomyImage
Editor-In-Chief: Template:Infobox Nerve C. Michael Gibson, M.S., M.D. [1]