#rib.bone__costa  any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)
  supertype:  bone__os  rigid connective tissue that makes up the skeleton of vertebrates
  subtype:  true_rib  one of the first seven ribs in a human being which attach to the sternum
  part of:  vertebrate
  part:  costal_cartilage  the cartilages that connect the sternum and the ends of the ribs; its elasticity allows the chest to move in respiration

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