nerve net


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Related to nerve net: nerve ring

nerve net

[′nərv ‚net]
(invertebrate zoology)
A network of continuous nerve cells characterized by diffuse spread of excitation, local and equipotential autonomy, spatial attenuation of conduction, and facilitation; occurs in cnidarians and certain other invertebrates.
References in periodicals archive ?
The nervous system of this original multicellular animal is organised in an elementary nerve net that is already capable of simple behaviour patterns.
The general theory: The oldest animals were the simplest, and once neural systems emerged, they evolved in a straightforward path from primitive nerve nets up to complex human brains.
each wavering color had its nerve nets (if one fired,