In tetanus, Renshaw cells fail to work and the alpha motor neuron keeps firing without any inhibitory control, causing muscle rigidity and spasm.

破伤风患者中，闰绍细胞失去其功能，α运动神经元失去上级抑制，持续兴奋引起肌肉强直收缩和痉挛。

The upper motor neuron releases acetylcholine from its axon terminal knobs and these are received by nicotinic receptors on the alpha motor neuron.

上运动神经元从轴突末端释放乙酰胆碱，作用于α运动神经元上的烟碱受体。

The role of Renshaw cells and inhibitory neurotransmitters is to fine-tune the action of the alpha motor neuron, which is in charge of sending the actual signal for contraction to the muscle.

闰绍细胞和抑制性神经递质可调整α神经元的运动；α神经元负责向肌肉发送收缩信号。