Corpus: Thoracic nerve

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from Latin: thorax - ribcage
Synonyms: Nervus thoracalis, thoracic nerve
English:

Definition[Bearbeiten]

The term thoracic nerves or nervi thoracales' refers to the spinal nerves that emerge from the thoracic section of the spinal cord, the thoracic medulla. There are a total of 12 paired thoracic nerves. The corresponding spinal cord segments are numbered Th1 - Th12.

Anatomy[Bearbeiten]

The anterior branches (rami) of the uppermost thoracic nerve (Th1) are involved in the formation of the brachial plexus, the anterior branches of the lowermost thoracic nerve (Th12) in the formation of the lumbar plexus.

The ventral branches of the 1st-11th thoracic nerves run between the ribs and are therefore also known as intercostal nerves. A branch of the anterior branch of the 12th thoracic nerve forms the subcostal nerve.

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