They protect the spinal cord, which runs through an opening called the spinal canal Some people are born with a small spinal canal. Spinal stenosis is the narrowing of one or more spaces within your spinal canal It causes symptoms like back or neck pain and tingling in your arms or legs. The center of the spinal cord is hollow and contains a structure called the central canal, which contains cerebrospinal fluid The spinal cord is also covered by the meninges and enclosed by the neural arches
Together, the brain and spinal cord make up the central nervous system. The spinal cord consists of bundles of nerve axons forming pathways that carry incoming and outgoing messages between the brain and the rest of the body The spinal cord contains nerve cell circuits that control coordinated movements such as walking and swimming, as well as urinating. The spinal cord is part of the central nervous system It relays sensations to the brain and allows the brain to control movements and function of the internal organs, trunk, and arms and legs.
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