In the spinal cord, the most lateral of the bundles of the ventral nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts: an<unk>  (or<unk>  column'), between the<unk>  median fissure and the most lateral of the ventral nerve roots; and a lateral<unk> , between the exit of these roots and the posterolateral sulcus.
Anterior funiculus
Reticulotegmental nucleus
Cortical homunculus
Medulla
Medulla 
External lamina
Cortical minicolumn
Pretectal area