The Ribs
Vertebrosternal Ribs
(true ribs; 1-7)
Dorsal attachment to thoracic vertebrae; ventral attachment to sternum by costal cartilages
Vertebrochondral
(false ribs; 8-10)
Dorsal attachment to thoracic vertebrae; ventral attachment by costal cartilage to superior costal cartilages
Vertebral Ribs (false floating ribs; 11 & 12)
Dorsal attachment to thoracic vertebrae; no ventral attachment