这个词是什么意思？
A major nerve of the upper extremity. In humans, the fibers of the median nerve originate in the lower cervical and upper thoracic spinal cord (usually C6 to T1), travel via the brachial plexus, and supply sensory and motor innervation to parts of the forearm and hand.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008475 · MeSH 2026。
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