Full C4 (4th Cervical Vertebra) Description
[Continued from above] . . . permitting the sympathetic nerves, vertebral vein, and vertebral artery to pass from the spinal column and out to the body. The vertebral body or centrum and the superior and inferior articular facets work in conjunction with the C3 vertebra above and C5 below to allow for smooth articulation of the spine, cushioned by intervertebral discs. Posterior to the vertebral arch, a notched (bifid) spinous process extends for connection of the spine to muscles and ligaments.