At any moment, there is "an electrical storm" coursing through your body. Discover how chemical reactions create an electric current that drives our responses to everything in this 5-minute video:
Read more and customize this lesson at TED-Ed website: http://ed.ted.com/lessons/how-do-nerves-work
Read more and customize this lesson at TED-Ed website: http://ed.ted.com/lessons/how-do-nerves-work