part of part of Homo sapiens thoracic vertebra 2 zone of bone organ superior articular facet of second thoracic vertebra 2026-03-19T00:00:00Z A zone of bone organ located on the superior articular process of the second thoracic vertebra, facing posteriorly and oriented predominantly in the coronal plane. It articulates with the inferior articular facet of T1 at the zygapophyseal joint, guiding movement and limiting axial rotation in the upper thoracic spine. David Osumi-Sutherland