Thoracic nerves

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Nerve: Thoracic nerves
Gray820.png
Cutaneous distribution of thoracic nerves.
Latin nervi thoracici
Gray's p.923
MeSH Thoracic+nerves
Anatomical terms of neuroanatomy

The thoracic nerves are the twelve spinal nerves emerging from the thoracic vertebrae. Branches also exit the spine and go directly to the paravertebral ganglia of the autonomic nervous system where they are involved in the functions of organs and glands in the head, neck, thorax and abdomen.

Anterior divisions[edit]

Posterior divisions[edit]

The medial branches (ramus medialis; internal branch) of the posterior divisions of the upper six thoracic nerves run between the Semispinalis dorsi and Multifidus, which they supply; they then pierce the Rhomboidei and Trapezius, and reach the skin by the sides of the spinous processes. This sensitive branch is called medial cutaneous ramus.

The medial branches of the lower six are distributed chiefly to the Multifidus and Longissimus dorsi, occasionally they give off filaments to the skin near the middle line. This sensitive branch is called posterior cutaneous ramus.

Additional images[edit]

External links[edit]

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