BIOC21H3 Final: final exam review - long answers
10 Jan 2012
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Document Summary
A neuron along with the specific muscle fibers that it innervates is called a motor. A single neuron may innervate several to a hundred or more muscle fibers. The larger the motor unit the more muscle fibers the neuron innervates. Therefore neurons innervating the back will have large motor units. Where as those innervating the finger will have small motor units. Demdrtes reicieve motor information via electrical impulses. The impulses are carried through the perkaryon. The axons utilize salutatory conduction to allow action potel to jum from node of ranvier to node of ranvier. The single mylinated axon leaves the ventral horn. Created by the junctional folds of the muscle fiber. The nerve impulse carried through the neuron into the tellodendria causes an influx of calcium into the terminal bouton causes the fusion of synaptic ach vesicles with the membrane of the terminal bouton. This will cause the release of ach into the synaptic cleft.
