Human Spinal Cord: Structure, Composition, and Functions


Spinal Cord

Structure: Medulla oblongata narrows down into an oval-configuration hollow cylinder, the spinal cord, running through the vertebral column.
Composition: It is formulated/made up of a very large number of neurons; the cell-fibers and cell bodies of which are systemized in a definite pattern.
Cross section: In cross-section, the spinal cord shows an inner/interior butterfly shaped grey matter, containing a central canal and the outer portion composed of white matter.
Gray Matter as in other parts of the nervous system consists/comprises of cell bodies and non-myelinated nerve fibers or tracts.
White Matter is made up of myelinated nerve fibers or tract.

Functions Of Spinal Cord


  • The spinal cord is the center/heart for a great many/several reflexes.
  • It serves as a pathway/passageway for conduction of impulses to and from different: parts of the body and brain.