Sharing: The nervous system: more than 90,000 miles of sensations! – Visual Dictionary

Drawing of the Central and Peripheral Nervous System - showing brain and nerves throughout the human body
The Central and Peripheral Nervous System – just the high-level view

The nervous system: more than 90,000 miles of sensations!

The structure of the nervous system

The nervous system allows our bodies to perceive sensations, to think and to perform all of our movements, both voluntary and involuntary. It is composed of the brain, the spinal cord and the nerves. Anatomically speaking, the nervous system is comprised of the central nervous system (the brain and the spinal cord, which are the interpretation and command centers), and the peripheral nervous system, which is composed of the nerves (the transmission network).

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