Thoracic spinal nerve 12
The thoracic spinal nerve 12 (T12) is a spinal nerve
Spinal nerve
The term spinal nerve generally refers to a mixed spinal nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body...

 of the thoracic segment..

It originates from the spinal column from below the thoracic vertebra 12 (T12).
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