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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.
Area of skin supplied by a single segment of spinal cord is called a dermatome. Each spinal nerve is connected with the spinal cord by two roots, a ventral root which is motor, and a dorsal root which is sensory. The dorsal root is characterized by the presence of a spinal ganglion at its distal end.In the majority of nerves the ganglion lies in the intervertebral foramen.rea of skin supplied by a single segment of spinal cord is called a dermatome. Each spinal nerve is connected with the spinal cord by two roots, a ventral root which is motor, and a dorsal root which is sensory. The dorsal root is characterized by the presence of a spinal ganglion at its distal end.