BrainInfo

corticospinal tract
Acronym:

The term corticospinal tract refers to a fiber pathway from the cerebral cortex to the spinal cord. Its fibers originate from pyramidal neurons of the precentral gyrus, and on their way to the spinal cord, pass through parts of the cerebral white matter (including the posterior limb of the internal capsule), the crus cerebri, the longitudinal pontine fibers, the pyramid of the medulla (where they are known as the pyramidal tract) and the pyramidal decussation. In the ducussation, some fibers cross to the other side of the brainstem to form the lateral corticospinal tract. Those fibers that do not cross split to form the anterolateral corticospinal tract and the anterior corticospinal tract ( Carpenter-1983 ). Some parts of the tract are not readily distinguished in myelin stained cross-sections.

Also known as: corticospinal fibersNeuroNames ID : 1320

Size Differences by Sex, Age and Diagnosis

Species Having or Lacking this Structure

All Names & Sources	Internal Structure	Cells Found There	Genes Expressed There
Locus in Brain Hierarchy	Connections	Models Where It Appears	Publications About It