TIL you have a 'second brain' embedded in the wall of your gut which controls digestion and has five times more neurons than a rat's brain

http://neurosciencestuff.tumblr.com/post/38271759345/gut-instincts-the-secrets-of-your-second-brain



Submitted March 31, 2015 at 10:33PM by autonova3 http://www.reddit.com/r/todayilearned/comments/30y16m/til_you_have_a_second_brain_embedded_in_the_wall/