Selective Re-Innervation of Twitch and Slow Muscle Fibers of the Frog
Re-innervation in adult mammalian skeletal muscle fibers is non specific. A motor nerve supplying several different muscles regenerates forming inappropriate connections as readily as appropriate ones (35,2,24). Furthermore, in hyperinnervated skeletal muscle there is no indication that the original nerve can displace or repress foreign innervation (11). Moreover, the establishment of foreign synapses can lead to suppression of original inputs (4). In lower vertebrate, however, there is considerable evidence for specificity of muscle innervation, and some evidence for the ability of native nerve fibers to displace foreign ones (20,29,7). In this article the re-innervation of skeletal muscle fibers of the frog will be analyzed.
KeywordsSciatic Nerve Conduction Velocity Motor Axon Slow Muscle Synaptic Potential
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