The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts, viz., an anterior funiculus, between the anterior median fissure

Anterior median fissure

Anterior median fissure can refer to:* Anterior median fissure of the spinal cord* Anterior median fissure of the medulla oblongata...

 and the most lateral of the anterior nerve roots; and a lateral funiculus

Lateral funiculus

The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts, viz., an anterior funiculus, between the anterior median fissure and the most lateral of the anterior nerve roots; and a lateral funiculus,...

, between the exit of these roots and the postero-lateral sulcus.