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Reply #73: unless I'm mistaken-- and that's been known to happen occasionally... [View All]

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Home » Discuss » Archives » General Discussion (1/22-2007 thru 12/14/2010) Donate to DU
mike_c Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Mar-10-09 07:34 PM
Response to Reply #60
73. unless I'm mistaken-- and that's been known to happen occasionally...
Edited on Tue Mar-10-09 07:35 PM by mike_c
...that second "brain" is more a metaphor than anything else. The vertebrate "brain" has a particular structure that is not repeated anywhere else in the nervous system. I believe the organ you're referring to is the caudal ganglion, which has been surmised to oversee a number of neurological events in the posteriors of large, slow witted dinosaurs and members of congress. Seriously though-- the caudal ganglion is not an accessory "brain." That's just a metaphor for its extra utility in some animals (including many modern insects, BTW).
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