7 ruas tulang gulu — tulang vertebra servikal (Vertebrae cervicales Vertebra cervicalis) 12 ruas tulang balukuk — tulang vertebra torakal (Vertebrae thoracicae Vertebra thoracica) 5 ruas tulang pinggang — tulang vertebra lumbal (Vertebrae lumbales Vertebra lumbalis)[note 1] 1 tulang kelangkang — tulang sakrum (Os sacrum) [note 2][note 3] 1 tulang buntut — tulang koksigis (Os coccygis) [note 4][note 3][1][2]