part of part of Homo sapiens vertebral bone 2 zone of bone organ superior articular facet of second cervical vertebra 2026-03-19T00:00:00Z A zone of bone organ on the flat, laterally oriented superior articular process of the axis (C2), presenting an oval convex articular surface that faces superiorly and laterally to articulate with the inferior articular facet of the atlas in the lateral atlantoaxial joint. David Osumi-Sutherland