Hank begins a series of videos on organ systems with a look at the nervous system and all of the things that it is responsible for in the body.
References:
http://webspace.ship.edu/cgboer/actionpot.html
http://brainconnection.positscience.com/topics/?main=fa/zebras
http://en.wikipedia.org/wiki/Myelin_sheath_gap
http://www.bbc.co.uk/science/humanbody/body/factfiles/nervecellsandnerves/nerve_cells_and_nerves.shtml
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