It takes place in the mitochondria. 
        
             
        
        
        
If i'm not mistaken, it's the aorta
        
             
        
        
        
Vertebrae are the scientific term for the backbones. 
All backbones are backbones... right? :'D 
However, the vertebrae are only a bone GROUP; there are other types of bones like joints, shafts and etc which don't come under the vertebrae clssification.