Twelfth costal cartilage

Cartilago costalis

SkeletalSkeletonAbdomenLeft and right

View left in 3D View right in 3D

What it is
Bar of hyaline cartilage continuing the twelfth rib (a short free tip).
Function
Gives the rib cage the elasticity it needs for breathing and to absorb blows.
Size
≈ 1 cm long
Clinical note
Costal cartilage often calcifies with age, stiffening the chest wall; inflammation of the costochondral joints (costochondritis) mimics heart pain.