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- Dictionaryrib cage/ˈribˌkāj/
noun
- 1. the bony frame formed by the ribs around the chest.
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noun
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The rib cage or thoracic cage is an endoskeletal enclosure in the thorax of most vertebrates that comprises the ribs, vertebral column and sternum, which protect the vital organs of the thoracic cavity, such as the heart, lungs and great vessels and support the shoulder girdle to form the core part of the axial skeleton. Wikipedia