Corticospinal tract travels from the cerebral cortex and terminates in spinal cord where it represents motor functions of the body. It is involved in voluntary movements and contains as the only location of the body, the largest pyramid cells called Betz cells.
The pathway initiates from the pre-central gyrus which is the primary motor cortex. From their two groups of upper motor neurons arise, one group of the neurons innervate the axial muscles, whereas the other group innovates the limb muscles. From the cortex they travel through the internal capsula and the brainstem where 90% of the fibers decussate in the medulla. These fibers travel through lateral funiculus and form lateral corticospinal tract. In the ventral horn the upper motor neurons
The pathway initiates from the pre-central gyrus which is the primary motor cortex. From their two groups of upper motor neurons arise, one group of the neurons innervate the axial muscles, whereas the other group innovates the limb muscles. From the cortex they travel through the internal capsula and the brainstem where 90% of the fibers decussate in the medulla. These fibers travel through lateral funiculus and form lateral corticospinal tract. In the ventral horn the upper motor neurons