In adults, spinal cord ends at the lower end of:

The spinal cord is a cylindrical, grayish white structure that begins above at the foramen magnum, where it is continuous with the medulla oblongata of the brain.In the young child, it is relatively longer and ends at the upper border of the third lumbar veebra.The spinal cord in the cervical region gives origin to the brachial plexus, and in the lower thoracic and lumbar regions, where it gives origin to the lumbosacral plexus.Inferiorly, the spinal cord tapers off into the conus medullaris, from the apex of which a prolongation of the pia mater, the filum terminale, descends to be attached to the back of the coccyx.