part of part of Homo sapiens rib 3 non-articular facet of tubercle of third rib 2026-03-19T00:00:00Z A skeletal element projection forming the roughened, non-articular portion of the tubercle of the third rib that anchors the lateral costotransverse ligament. It lies on the lateral aspect of the tubercle adjacent to the smooth articular facet and faces posteriorly toward the transverse process of the third thoracic vertebra. skeletal element projection David Osumi-Sutherland