Our amazing body: "spine"

The human body is amazing, all the parts play a specific and important role, none is most important than another because if any organ, system or any part of the body stops work, if will affect us.
But today I will write about(in my opinion) one of the most amazings parts of the body: spine.

Spine, also known as the vertebral column or black bone is made up of smalls bones called vertebrae(we have 26 vertebrae), its divides in four segments: cervical spine,thoracic spine, lumbar spine and sacrum and coccyx, from the neck to the coccyx. The measure is 75 cm long and the spinal(this part is very important because the brain sends nerve impulses through the spinal cord, is an important communication center for all cell of the body maintaining all the vital functions of each organ and cell, and if it is touched in the wrong place or it breaks causes invality in the whole body irreversibly) measure is 45 cm long and weight 30 gram and the role it play is amazing because unites and sustains our whole body and without it we can not stand up. And the other amazing part is the cervical spine because 7 vertebrae help hold the head that weighs 8 kilograms.

We need take care to the vertebral column and not to break(this produces hump and pain) maintaining a correct posture when sitting and standing and not carrying much weight on the back. So we can avoid deformations.