MeSH definition : Bars of HYALINE CARTILAGE extending from the anterior ends of the upper RIBS. They
attach to the STERNUM directly or indirectly by connecting to upper costal cartilage
that attaches to the STERNUM. Costal cartilages extend the ribs anteriorly and contribute
to the enhanced elasticity of the THORACIC WALL.;
Bars of HYALINE CARTILAGE extending from the anterior ends of the upper RIBS. They
attach to the STERNUM directly or indirectly by connecting to upper costal cartilage
that attaches to the STERNUM. Costal cartilages extend the ribs anteriorly and contribute
to the enhanced elasticity of the THORACIC WALL.