part of part of Homo sapiens rib 5 non-articular facet of tubercle of fifth rib 2026-03-19T00:00:00Z A skeletal element projection forming the roughened, non-articular area on the lateral aspect of the tubercle of the fifth rib that serves as the attachment site for the lateral costotransverse ligament. It is separated from the smooth medial articular facet and faces posteriorly. skeletal element projection David Osumi-Sutherland