Cns Relationship To The

''Are both these sensory or afferent nerve fibers, and these motor or efferent nerve fibers, related to specific areas of the CNS?'' Yes, they may bring sensory information into, or motor information out of, either the brain or the spinal cord. We can define the brain as the encephalon (en-SEF-ah-lahn). The brain (encephalon) is the superior portion of the CNS. It is the part located ''within'' (en-) the ''head'' (cephalon) and skull. Conversely, the spinal cord is the narrow, ''cord''-like, inferior portion of the CNS, that passes through the bony ''spine.''

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