Nerve net 379198 182967989 2008-01-08T16:04:52Z 129.241.146.245 {{Unreferenced|date=August 2007}} ''For the album by [[Brian Eno]], see [[Nerve Net (album)]]''. A '''nerve net''' is a type of simple [[nervous system]] that is found in members of the [[phylum (biology)|phylum]] [[cnidaria]]. Nerve nets consist of interconnected [[neuron]]s lacking a [[brain]] or any form of [[cephalization]]. This nervous system allows [[cnidarian]]s to respond to physical contact. They may then detect food and other chemicals in a rudimentary way. Although the nerve net allows the animal to respond to its environment, it has trouble alerting the animal from where the [[stimulus (physiology)|stimulus]] is coming. For this reason, simple animals with nerve nets, such as [[hydra (genus)|hydra]], will typically respond in the same way to contact with an object, regardless of where the contact occurs. ==See also== *[[Insect nervous system]] *[[Nerve chord]] ==References== *Kass-Simon G, Pierobon P. Cnidarian chemical neurotransmission, an updated overview. Comp Biochem Physiol A Mol Integr Physiol. 2007 Jan;146(1):9-25. Epub 2006 Sep 22. PMID 17101286 *Miljkovic-Licina M, Gauchat D, Galliot B. Neuronal evolution: analysis of regulatory genes in a first-evolved nervous system, the hydra nervous system. Biosystems. 2004 Aug-Oct;76(1-3):75-87. PMID 15351132 *Koizumi O, Mizumoto H, Sugiyama T, Bode HR. Nerve net formation in the primitive nervous system of Hydra--an overview. Neurosci Res Suppl. 1990;13:S165-70. PMID 2259484 *Shimizu H. Feeding and wounding responses in Hydra suggest functional and structural polarization of the tentacle nervous system. Comp Biochem Physiol A Mol Integr Physiol. 2002 Mar;131(3):669-74. PMID 11867292 *Sakaguchi M, Mizusina A, Kobayakawa Y. Structure, development, and maintenance of the nerve net of the body column in Hydra. J Comp Neurol. 1996 Sep 9;373(1):41-54. PMID 8876461 *Gillis MA, Anctil M. Monoamine release by neurons of a primitive nervous system: an amperometric study. J Neurochem. 2001 Mar;76(6):1774-84. PMID 11259495 *Grimmelikhuijzen CJ, Westfall JA. The nervous systems of cnidarians. EXS. 1995;72:7-24. PMID 7833621 [[Category:Nervous system]] [[Category:Animal anatomy]] {{neuroscience-stub}} [[de:Nervennetz (Nervensystem)]] [[sr:дифузан нервни систем]]