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'''Ganglia''' are a mass of [[nervous tissue]]. In more primitive [[central nervous system | central nervous systems]] ganglia often serve as a [[brain]].  

'''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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