Subcostal nerve

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Nerve: Subcostal nerve

Cutaneous distribution of thoracic nerves.
Latin	nervus subcostalis
Gray's	p.948
From	T12

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

Nervous system
The posterior divisions of the sacral nerves.
Plan of lumbar plexus.
Cutaneous nerves of the right lower extremity. Front and posterior views.

External links

Anatomy at MUN nerve/lumbnerv
posteriorabdomen at The Anatomy Lesson by Wesley Norman (Georgetown University) (posteriorabdmus&nerves)
glutealregion at The Anatomy Lesson by Wesley Norman (Georgetown University)
abdo_wall70 at the University of Michigan Health System - "Posterior Abdominal Wall, Dissection, Anterior View"
SUNY Figs 40:07-00 - "Muscles and nerves of the posterior abdominal wall."
SUNY Anatomy Image 8982

This article incorporates text from a public domain edition of Gray's Anatomy.

Nerves: spinal nerves (TA A14.2, GA 9.916)

Cervical (8)

C1, C2, C3, C4, C5, C6, C7, C8

anterior (Cervical plexus, Brachial plexus) – posterior (Posterior branches of cervical nerves, Suboccipital – C1, Greater occipital – C2, Third occipital – C3)

Thoracic (12)

T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12

anterior (Intercostal, Intercostobrachial – T2, Thoraco-abdominal nerves – T7–T11, Subcostal – T12) – posterior (Posterior branches of thoracic nerves)

Lumbar (5)

L1, L2, L3, L4, L5

anterior (Lumbar plexus, Lumbosacral trunk) · posterior (Posterior branches of the lumbar nerves, Superior cluneal L1–L3)

Sacral (5)

S1, S2, S3, S4, S5

anterior (Sacral plexus) · posterior (Posterior branches of sacral nerves, Medial cluneal nerves)

Coccygeal (1)

anterior (Coccygeal plexus) · posterior (Posterior branch of coccygeal nerve)

M: PNS

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noco/auto/cong/tumr, sysi/epon, injr

proc, drug (N1B)

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Subcostal nerve

Additional images

See also

External links