FMA definition : Tract of brain, each instance of which is a group of fibers arising mostly from the
reticular formation of some pons and medulla oblongata; chiefly homolateral, the fibers
descend in the ventral and lateral funiculi to most levels of some spinal cord.;
Tract of brain, each instance of which is a group of fibers arising mostly from the
reticular formation of some pons and medulla oblongata; chiefly homolateral, the fibers
descend in the ventral and lateral funiculi to most levels of some spinal cord.