The vertebral column, also called the spine
, is the skeleton
of the back.
It consists of 33 stacked vertebrae, forming a column, with bends in the anteroposterior plane.
The vertebrae are the bones that differ according to the region of the back where they are positioned: cervical, dorsal, lumbar or sacrococcygiennes.
Each vertebra is formed by a cylindrical front portion whose upper and lower faces are articulated with the adjacent vertebrae by a fibrous elastic bead, the intervertebral disc. These discs allow mobility of the column and act as shock absorbers
Each vertebra has a hole in its rear part which delimits the spinal hole, and the stacking of vertebrae make a hollow bone tube, the spinal canal where is the spinal cord
The spinal cord is a nerve center that allows the brain to connect to the rest of the body
Original article published by
. Translated by Crashounette