Grey matter in the spinal cord is composed of bundles of long, myelinated axons that carry messages to and from the brain.

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Grey matter in the spinal cord is made up of primarily cell bodies, dendrites, and unmyelinated axons of neurons involved in receiving and processing sensory information and generating motor commands. White matter in the spinal cord is composed of myelinated axon tracts that relay information between different levels of the spinal cord and between the spinal cord and the brain.

Grey Matter in the Spinal Cord Is Composed of Bundles