selkäydinpylvääseen

Selkäydinpylväs, or spinal column in English, is a fundamental part of the skeletal system in many vertebrates, including humans. It is a bony structure that runs from the skull down to the pelvis, providing support, protection, and mobility. The spinal column is composed of a series of individual bones called vertebrae, which are stacked one on top of another. These vertebrae are separated by intervertebral discs, which act as shock absorbers and allow for some movement between the vertebrae.

The spinal column is divided into several regions: the cervical spine (neck), thoracic spine (upper back), lumbar spine (lower back), sacrum (pelvic bone), and coccyx (tailbone). Each region has a specific number of vertebrae and a distinct curvature that contributes to the overall posture and function of the spine. The primary function of the spinal column is to protect the spinal cord, a vital bundle of nerves that transmits signals between the brain and the rest of the body. The vertebral canal, a hollow space within the stacked vertebrae, encloses and shields the spinal cord from injury.

In addition to protection and support, the spinal column enables a wide range of movements, such as bending, twisting, and extending. Muscles, ligaments, and tendons attach to the vertebrae, facilitating these movements and maintaining spinal stability. Disorders of the spinal column can range from minor stiffness to severe conditions like herniated discs, scoliosis, and spinal stenosis, which can cause pain, nerve compression, and loss of function. Maintaining good posture, regular exercise, and proper lifting techniques are crucial for spinal health.