pyramidal tract

pyramidal-tract的词性：
n.（名词）

1. 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，从大脑皮层感觉运动的区域出发并大体上通过脑血管传向下到达脊髓，锥骨束的行维能传递在随意运动的控制上起作用的运动神经所受的刺激