part of part of Homo sapiens thoracic vertebra 4 thoracic vertebral arch vertebral arch of fourth thoracic vertebra 2026-03-19T00:00:00Z A neural arch forming the posterior bony ring of the fourth thoracic vertebra, composed of paired pedicles and laminae that unite at the spinous process. It bears the superior and inferior articular processes oriented in the coronal plane and the transverse processes with costal facets for rib 4, with a long spinous process that overlaps the level below. David Osumi-Sutherland