The<unk>  is a part of the human skeleton within the thoracic area. A typical<unk>  consists of 24<unk> s, 12 on each side of the thoracic cavity, the sternum and the 12 thoracic vertebrae in both males and females.
Human rib cage
Human skeleton
Human leg
Floating rib
Operon
Thoracic cavity
Kingdom 
Tissue 