Difference between revisions of "Ganglia"

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'''Ganglia''' (single: '''ganglion''') are a loosely tangled mass of [[nervous tissue]] which have not become specialized for individual functions such as motor skills, touching, feeling, or intelligence. In more primitive [[central nervous system]]s ganglia often serve as an inferior substitute for a [[brain]] and/or a [[spine]]. Animals or plants which have ganglia can confidently be said to feel no pain--reactions to injury are simple [[reflex]]es without lasting [[memory]]. Therefore concerns about [[humane]] treatment in the cooking of such animals, e.g. [[lobster]]s or [[snail]]s, are irrelevant.
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'''Ganglia''' (single: '''ganglion''') are masses of [[neuron]] cell bodies outside of the central nervous system.  Humans have many ganglia throughout the body, such as the dorsal root ganglia, which contain the neuron cell bodies of sensory nerves entering the spinal cord from the periphery. In organisms which have a [[nervous system]] but not a developed [[brain]], a ganglion may be the highest level of neuronal organization present.
  
 
==References==
 
==References==

Revision as of 20:05, October 6, 2008

Ganglia (single: ganglion) are masses of neuron cell bodies outside of the central nervous system. Humans have many ganglia throughout the body, such as the dorsal root ganglia, which contain the neuron cell bodies of sensory nerves entering the spinal cord from the periphery. In organisms which have a nervous system but not a developed brain, a ganglion may be the highest level of neuronal organization present.

References

  • Martin, JH (2003). Neuroanatomy text and atlas 3rd ed., New York: McGraw-Hill.
  • Kandel, ER; Schwartz JH, Jessell TM (2000). Principles of Neural Science, 4th ed., New York: McGraw-Hill. ISBN 0-8385-7701-6.


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