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Posted By webbrainhealth1 3 months ago in Styledescribes how nutrion effects the brain The central nervous system (SNS) consists of the brain and the spinal cord. The brain has three main sections: the cerebrum, the cerebellum, and the brainstem. The normal adult brain weights 3 pounds; it grows steadily until 20 years of age and then loses weight for the rest of life.
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