Talk:Echinoderm
From Academic Kids
What is a machaerid? I find no mention of them anywhere else on the web. -phma
Search under machaeridia. This is one of those cases where using the full Latin version of the name might be better...
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Thanks!
This is a very useful page. Thanks for creating it
in this:
They have a simple radial nervous system that consists of a modified nerve net (interconnected neurons with no central organs); nerve rings with radiating nerves around the mouth extending into each arm; the branches of these nerves coordinate the movements of the animal. Echinoderms have a brain, although it is very small.
i'm not a biologist, but doesn't a brain count as a central nervous system organ?
