An enclosed cylindrical tract ofnerve fibers that forms a central route for theconduction of nerve impulses within thebody;for example,the spinal cord in verte-brates and other chordates.一个封闭的圆柱状的神经纤维形成的中枢神经通路。其作用是传递机体内的神经冲动,例如......(本文共 215 字) [阅读本文] >>


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