posterolateral sulcus

pos·ter·o·lat·er·al sul·cus

[TA]
a longitudinal furrow on either side of the posterior median sulcus of the spinal cord marking the line of entrance of the posterior nerve roots.

posterolateral sulcus

a shallow depression on each side of the posterior surface of the spinal cord that marks where the posterior rootlets of the spinal nerve enter the cord.

pos·ter·o·lat·er·al sulcus

(pos'tĕr-ō-lat'ĕr-ăl sŭl'kŭs) [TA]
A longitudinal furrow on either side of the posterior median sulcus of the spinal cord marking the line of entrance of the posterior nerve roots.
Synonym(s): dorsolateral sulcus.