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The spinal cord is a long, thin, tubular bundle of nerves that is an extension of the central nervous system from the brain and is enclosed in and protected by the bony vertebral column.The main function of the spinal cord is transmission of neural inputs between the periphery and the brain.he spinal cord is the main pathway for information connecting the brain and peripheral nervous system. The length of the spinal cord is much shorter than the length of the bony spinal column.
Specialized Nerve Tests: EMG, NCV and SSEP. Introduction. The spinal cord is the thick, whitish bundle of nerve tissue that extends from the lowest part of the brain down through the spinal column. In humans, spinal nerves branch off from the spinal cord to various parts of the body.