uncrossed fibers forming a small bundle in the anterior funiculus of the spinal cord.pyramidal tractcorticospinal tract. SYN: tractus corticospinalis anterior [TA], anterior pyramidal fasciculus, anterior pyramidal tract, direct pyramidal tract, fasciculus corticospinalis anterior, fasciculus pyramidalis anterior, tractus pyramidalis anterior, Türck bundle, Türck column, Türck tract.