part of part of Homo sapiens thoracic vertebra 9 thoracic vertebral arch vertebral arch of ninth thoracic vertebra 2026-03-19T00:00:00Z A neural arch forming the posterior bony ring of the ninth thoracic vertebra, composed of pedicles and broad laminae enclosing the spinal canal in the lower thoracic region. The spinous process is long and inferiorly directed, and the transverse processes carry facets for the tubercle of rib 9, near the lower limit of the typical transverse costal facet series. David Osumi-Sutherland