The rib cage is an arrangement of bones in the thorax of animals. It is formed by the vertebral column, ribs and sternum and encloses the heart and lungs.
Rib Cage is a cage type arrangement of bones in the thorax of animals. The bent ribs join the chest bone and the backbone together to form the Rib Cage. Some important internal parts like heart and lungs of our body lie protected inside this cage.
Via - http://en.wikipedia.org/wiki/Rib_cage
Human rib cage
The human rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and supports the pectoral girdle, forming a core portion of the human skeleton. A typical human rib cage consists of 24 ribs, thesternum (with Xiphoid process), costal cartilages, and the 12 thoracic vertebrae. It, along with the skin and associated fascia and muscles, makes up the thoracic wall and provides attachments for the muscles of the neck, thorax, upper abdomen, and back.
Via - http://en.wikipedia.org/wiki/Human_rib_cage
Rib cage Pictures