Spine's Key Muscles: Stabilisers and Communicators
The human spine, a marvel of engineering, is made up of 24 vertebrae. These bones not only provide structure but also protect the spinal cord, a crucial part of the central nervous system. Two key muscles, the multifidus and the longissimus, play vital roles in stabilising and moving the spine.
The multifidus muscle, stretching from the sacrum to the second vertebra in the neck, is a crucial stabiliser. It attaches to each vertebra via the spinous process, helping to distribute body weight evenly and take pressure off the vertebral discs. This muscle can be felt through the skin on either side of the vertebrae. Additionally, the longissimus muscle, part of the erector spinae group, aids in stabilising and rotating the lumbar spine. It reduces pressure on the vertebral bodies and facilitates metabolic exchange between them by enabling movement that relieves compressive forces and supports spinal stability. Both these muscles, along with other lower back muscles, work together to stabilise, rotate, flex, and extend the spinal column.
The spine's structure and function rely heavily on these muscles. They not only support the spine but also facilitate communication between the body and brain via the spinal cord. Understanding their roles is key to maintaining spinal health and preventing injuries.
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