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gray columns


Definition: the three somewhat ridge-shaped masses of gray matter (anterior, posterior, and intermediate columns) that extend longitudinally through the center of each lateral half of the spinal cord; in transverse sections these columns appear as gray horns and are therefore commonly called anterior (ventral), posterior (dorsal), and lateral horns, respectively.

Synonym(s): columnae griseaeTA

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.