| 释义 |
pyramidal tractn.（名词）- A major pathway of the central nervous system, originating in the sensorimotor areas of the cerebral cortex and generally descending through the brainstem to the spinal cord. The fibers of the pyramidal tract transmit motor impulses that function in the control of voluntary movement.锥体束：中央神经系统的一个主要通路，形成于大脑皮层感觉运动的区域，并从脑干大体向下至脊髓，锥体束纤维能传递运动神经所受的刺激，该刺激在随意运动的控制上起作用
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