human chest bones ribs ribcage |
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| navigate by keyword : anatomical anatomy body bones bony breastbone cage cartilage chest column costal costochondritis flaseribs flatbone human manubrium organs osteology ribcage skeleton sternum thoracic thorax trueribs vertebral vertebrochondral vertebrosternal xiphoid |
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| The ribs are a set of twelve paired bones which form the protective `cage` of the thorax. They articulate with the vertebral column posteriorly, and terminate anteriorly as cartilage known as costal cartilage. As part of the bony thorax, the ribs protect the internal thoracic organs. |
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