discs are the spinal column's shock absorbers. The discs cushion
the vertebral bones and allow the spine to twist and bend. Vertebral
discs are composed of two main parts, a soft inner nucleus (nucleus
pulposis) and a tough, fibrous outer wall (annulus fibrosis).
Neck pain is
a common problem that can result from poor posture, wear and tear,
overuse, or traumatic injury to the cervical spine. Neck pain can
last for a few hours or days, or it can be a chronic problem that
lasts for weeks or years.