part of part of Homo sapiens thoracic vertebra 3 thoracic vertebral arch vertebral arch of third thoracic vertebra 2026-03-19T00:00:00Z A neural arch forming the posterior bony ring of the third thoracic vertebra, composed of short pedicles and broad laminae that enclose the vertebral foramen and protect the spinal cord. The arch carries the transverse processes bearing transverse costal facets and a long, steeply inclined spinous process characteristic of the mid-upper thoracic region. David Osumi-Sutherland