Facts About the Nervous System
• If you were to line up all of the 100,000,000,000 neurons in your
brain, they would stretch across 600 miles.
• The fastest nerves in your body send electrical messages to your
brain at more than 200 miles per hour.
• The left side of your brain controls the right side of your body, and
• Invertebrates like sea anemones evolved the first basic nervous