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Cell Biology

Myelinated Fibers and Saltatory Conduction in the Shrimp: by Ke Xu,Susumu Terakawa

By Ke Xu,Susumu Terakawa

In 1961, neurobiologists came upon that the conduction speed of the nerve impulse within the immense nerve fiber of the Penaeus shrimp belly nerve wire used to be over 2 hundred m/s, the top pace of knowledge transmission ever saw within the animal state. The unusual myelin sheath with its particular nodal constitution and homes of the nerve fibers of the shrimp have persevered to be investigated for 1 / 4 of century and at the moment are totally defined during this ebook. The research dispels the widely held trust that the quickest recorded impulse conduction is ready one hundred twenty m/s within the thickest vertebrate myelinated nerve fibers. within the shrimp, researchers discovered a very novel kind of practical node within the large fiber which they unique because the fenestration node. In parts of the myelinated fiber, the fenestration node supplied the websites of excitation. additionally chanced on used to be a brand new technique for expanding impulse conduction within the shrimp. The e-book encompasses a part at the formation of the fenestration node and the invention of a method that permits the shrimp to flee its predators by way of an motion of the quickest speed. the information offered during this quantity at the myelin sheath of invertebrates current a brand new path for this box and a wealthy resource of knowledge for neurobiologists worldwide.

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