part of part of Homo sapiens thoracic vertebra 3 zone of bone organ superior articular facet of third thoracic vertebra 2026-03-19T00:00:00Z A zone of bone organ located on the superior articular process of the third thoracic vertebra, facing posteriorly and oriented in the coronal plane. It articulates with the inferior articular facet of T2 at the zygapophyseal joint, contributing to the stability and constrained mobility characteristic of the upper thoracic column. David Osumi-Sutherland