Unformatted text preview: * large fibers are myelinated * smaller fibers are unmyelinated A regeneration tube or guidance channel is necessary for nerve regrowth and is formed by the neurilemma and endoneurium Neurotransmitter Criteria * The chemical must be produced within a neuron. * The chemical must be found within a neuron. * When a neuron is stimulated (depolarized), a neuron must release the chemical. * When a chemical is released, it must act on a post-synaptic receptor and cause a biological effect (alter the physiology of that cell). * After a chemical is released, it must be inactivated. Inactivation can be through a reuptake mechanism or by an enzyme that stops the action of the chemical. * If the chemical is applied on the post-synaptic membrane, it should have the same effect as...
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- Fall '10
- Anatomy, saltatory conduction, square micrometer