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The Neurobiology of Drug Addiction

2: The brain and spinal cord

The brain and spinal cord

The central nervous system is composed of both the brain and the spinal cord. Describe the brain as a functional unit; it is made up of billions of nerve cells (neurons) that communicate with each other using electrical and chemical signals.

This page was last updated January 2007

2: The brain and spinal cord

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AP style citation

National Institute on Drug Abuse (2007). 2: The brain and spinal cord. In The Neurobiology of Drug Addiction. Retrieved from http://www.drugabuse.gov/publications/teaching-packets/neurobiology-drug-addiction/section-i-introduction-to-brain/2-brain-spinal-cord

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