Nerve fibres. Coloured scanning electron micrograph (SEM) of a section through a bundle of nerve fibres (pink) within their sheath, or perineurium (light brown). Other nerve fibre bundles (fascicles) are at right. Each fibre consists of a nerve cell axon (dark dot), the output process of a nerve cell, surrounded by a fatty insulating layer known as a myelin sheath (pink). Myelin sheaths increase the transmission speed of the electrical nerve signals. Nerves in the body serve to collect, interpret and relay information. The fibres pass the information on to other parts of the body, such as the muscles and the organs. Magnification unknown.
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Creative#:
TOP10219407
Source:
達志影像
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RM
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須由TPG 完整授權
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